oh my god.  let me start by not just commending, but extolling your completely original topic which i am fairly certain has never been writtten about on d-ish before. 

so, you missed a few, which i suppose could be considered subsets of a couple of the aforementioned cockblocks:

a) sober girls.  listen, i have no problem with people who don't drink.  that's a personal choice.  but i do have a problem with people who don't drink, then go out to an alcohol-centric environment (e.g. the club) where they proceed to be a complete fucking buzzkill. 

b) on the flip side of that coin, the alcohol cockblock, where you may have had just a few too many shots of tequila in pregame.  when you hit that point of shitfaced-ness where you're slurring your words just a little bit too obviously, maybe can't remember the girl's name, probably can't walk in a straight line.  plus side:  you are the best dancer in the fucking world.

c) the reputation cockblock, where a girl expresses interest in you at a party, but her friend finds out, and decides that based on his limited experience of knowing you ONCE before, he shouldn't leave her side for the rest of the night cause we're probably going to go in the bathroom and make out again. notice how i said this was a guy friend who cockblocked me? yeah, i'm still pretty fucking angry about this one.  (some girls are kind of into the "bad boy" thing, but i prefer to play the humble, innocent boy, mostly because those are the kinds of girls i'm into.)

@TheNotoriousGOD@xanga - Haha I like your extensions ... they all seem very plausible cockblocks. And thanks for the positive feedback. Slightly off the wall topics don't always get as many views but I'm trying to write stuff which is a bit different so I really like to hear when people enjoy my posts. Thank you :)

@vicdaily@xanga - Yup. Me too. No problem with that.

that's why I don't want to have kids. you can't prance around naked or wear a sexy outfit around the house, because I love to dress up, because that would be awkward and creepy around your kid(s), then bend over randomly and have jungle sex with my tarzan after you clean up your kids' slobber, change their stinky diapers, and try to get them to take another nap because you want a quickie with your s.o., your mood has been ruined and you don't exactly feel sexy when you just wiped your kid's vomit*supergross* my bf cockblocked the other cocks for me on my social network profile by plastering his lovey dovey comments all over my page.

LMAO it's so funny you say this because I have this friend who I went to the bar with a couple times & has told a couple guys have yelled at him for being a cockblock while they were trying to flirt with me.. I'm like, "Well, I appreciate your cockblocking!" because they were both guys I would NEVER sleep with. 

@TheNotoriousGOD@xanga - "plus side:  you are the best dancer in the fucking world." Hahaha... I got a huge grin reading that part of your comment. xD

The mid-sex cockblock is worse.  The guilty being my Jack Russel Terrier, who feels the need to check on my wife if she makes a sound.  I have to put the dog in the basement if we want privacy.

@ninetailedevee@xanga - Twat block? :D

I'm #5, but I'm not exactly getting any offers either, so it's no problem right now :] I'm sure it'll leave me with absolutely no one to date in the future when, hopefully, anyone takes some sort of interest in me.

This is a hilarious post, and I love that it's off the wall as you said in an earlier comment. Keep it up! :]

As a guy, in my experience there are two major types of cockblocks as far as friends go. There is the "UCB" or the unintentional cockblock, and the "ICB" or intentional cockblock. The "UCB" is usually either a chubby or simply socially awkward friend who doesn't take well to hints, and will stay way past his welcome talking about "survivorman" or "pawn stars", while you are trying to seal the deal. He is completely oblivious. It pisses you off, but, it happens sometimes. The "ICB", on the other hand, is a douche canoe. Sometimes you may even wonder why you are friends with this person. This person will deliberately expose any shortcoming you may have to anyone remotely interested in you. I have a friend who not only does this, but is proud of it. Needless to say, he doesn't get invited out much. 

once I left a friend alone with a guy who tried to flirt with her, because I thought that was polite. she was angry because she wanted me to 'save' her.

@olopocram2@xanga - there are other variables, too.  if you go to a club with house or dubstep or any of those other untz untz untz types of music, then you're right, people are just there to roll and dance.  you need to go to a club with top 40 and hip-hop.  (you can't do exclusively hip-hop because those clubs have only black people, and those girls won't express any interest in you if you're not black.) 

a couple of my friends don't like bars because there is a higher probability people are there "just to hang out with my friends" than to meet new people.  it's fine if you're a particularly engaging person, but even then, you're not going to bring a girl home with you that night.  i've never gotten more than a phone number from a bar.  however, i also like to talk a LOT, so i try to go to places with both, so i can talk in the bar area and then ask if she wants to go dance after a little bit of chit-chat.  alternatively, if you go early enough, the music is at a lower volume and there tend to be fewer guys.

if you're concerned about girls going to clubs just with their friends, i have 2 comments:  a) i call bs on these girls every time, and b) you can always tell by body language (and other factors) what they're up to that night. 

@vicdaily@xanga - being 5 is a massive cockblock. don't wanna get get put on that child offenders register!