Iamthe Nightstars: Best Knock Knock Joke

Iamthe Nightstars 08.13.11	Post the best/worst knock knock joke you know.
coneren 08.13.11	knock knock whos there your dad oh my god i want to fuck you HAHAHAHAHAHAHAAHAHAHAHAHAHAHA
Blackbelt54 08.13.11	knock knock who's there to to who? no, to whom!
MoosechriS 08.13.11	Knock Knock who's there It's Varg and i don't like this shit you've been apparently been talking about me. (some ten minutes later after numerous stabbings and a crazed fight in a stair well) shall we get going then?
iFghtffyrdmns 08.13.11	hahahahaha oh my god that video i'm dying hahahahahahahaha
benkim 08.13.11	We need a Jehovah Witness to post one. I heard they come up with the best knock knock jokes.
MoosechriS 08.13.11	Varg is the king of knock knock jokes, he slays (quite literally)
DiceMan 08.13.11	knock knock who's there? boo boo who? boo radley from to kill a mockingbird
iFghtffyrdmns 08.13.11	hey i like that book
Trebor17 08.13.11	Knock knock. Who’s there? September Eleventh. September Eleventh who? I thought you said you’d never forget.
Maniac! 08.13.11	http://www.youtube.com/watch?v=z4FcI7fRWMw&NR=1
TheEnigma 08.13.11	Oh my gosh this video.
Tyrael 08.13.11	Haha best video ever
MetallicOpeth 08.13.11	yea that was pretty awesome
SpiralBorn 08.13.11	Lol @Trebor
East Hastings 08.13.11	iamthe nig
andcas 08.13.11	knock knock who's there? caylee anthony caylee anthony who? have you no heart!
Emim 08.13.11	Knock knock who's there? KGB KGB wh--- SLAP VE VIL ASK ZE QVESTIONS
coneren 08.13.11	knock knock mime hi
KILL 08.13.11	gay vid
Trebor17 08.13.11	knock knock who's there? doctor doctor who? fuck that show
paxman 08.13.11	Knock knock Who's there? Banana Ah, never mind.
Emim 08.13.11	nerenoc
TheStefan 08.13.11	Knock knok who's there? Dave Dave who? Dave then starts to cry, as his grandmother's alzheimers has progressed to the point where she no longer recognizes her own grandson.
Emim 08.13.11	Knock knock who's there? CPS CPS who? Don't play coy; we're taking your children.
illmitch 08.13.11	knock knock whos there to to who? to whom
Emim 08.13.11	blackbelt got that joke in the 3rd post
illmitch 08.13.11	thestefan that joke rules
illmitch 08.13.11	i dont have time to read the comments here douchemaster knock knock whos there the interrupting doctor the interrupt- you have cancer
Emim 08.13.11	sorry for assuming so much of you
Blackbelt54 08.13.11	dude's stealing my material
illmitch 08.14.11	my version of it was better
qwe3 08.14.11	fuck you doctor who rules
coneren 08.14.11	and qwe strikes holy fuck everyone watch out
Emim 08.14.11	Knock knock Who's there? Doctor Doctor who? Doctor Whom*
Iamthe Nightstars 08.14.11	Knock knock Who's there? I eat mop I eat mop who?
Emim 08.15.11	LOL U EAT UR POO
lucasjcockcroft 08.15.11	lololol
pwalcher 08.19.11	http://www.youtube.com/watch?v=271gItFZFEw