Actually, “Janet” was what Garrison changed his name to following his sex change. Allyson was the name of the woman that he (she?) scissored with.
In the Who’s Cartman’s Dad ep, did he fuck Mrs Cartman, or just roll in the hay with her?
You mean aside from the “Alright, I slept with her, but who here hasn’t slept with Mrs. Cartman?” line from the first season?
Mr. Garrison is a great character, though, just because he’s so fucked up. “Yay, I’m pregnant, now I can have an abortion!”
Worth remembering though that Mrs. Cartman was actually a man at the time. 
Well, a hermaphrodite anyway.
I’m not just sure…I’m HIV positive.
You’re the retarded offspring of five monkeys having buttsex with a fishsquirrel. Congradulations.