Here's mine. Knock knock. Who's there 911. 911 who You said you'd never forget
Q: Why can't a blonde dial 911? A: She can't find the eleven.
Possum: Oh yeah
Well, mostly to forget.....
Because they make up an awful lot of stuff. EDIT: Because I forgot about neutrinos.
No, cows go moo.
I didn't know you could yodel!
Because he was in the middle of 9-11! Better phrasing recommendations appreciated