Karma. (Please forgive me)
Three. One to post it, and two to repost it.
Because they always *tip*.
A predditor. EDIT:
Ask him/her to pronounce unionized
Mesquite squite squite. ...Forgive me I'm freshly smoked.
Because he really kneaded the dough. (please forgive me for that awful pun)
He was outstanding in his field.
He had no prior convictions.
Groanhenge
Spacebook. (It's a terrible joke I know).