Knock-knock Who's there? Fuck. Fuck who? You.
Knock, knock; Who is there? Love; Love who? U, U, U!
Knock,Knock, Who is there? Pen! Pen who? is...
Knock Knock! Who's there? Testicules. Testicules who? Pillow for penis .
Knock-knock Who is there? A shattered penis with many diseases. What kind of illness? Gall, Aids, Gonorrhea, Syphilis... Enough, it is the best present for my mother in law.
Knock, Knock Who is there? A long erected penis with an eye on my head and some wools in my feet. What do you want? Is there any body to suck me? I want to weep.
Knock-Knock Who is there? A long penis with a naked head. Come in please we were waiting for you.
Knock, knock Who's there? I'm Mr, Farter. Mr, Farter who? I've brought some insecticides to give to your mother in law!
Knock knock Who's there? Double. Double who? W!
Knock, knock! Who's there? Spell. Spell who? W-H-O.