An annoying wrongdoer. In the ranking system where maynes are at the top followed by goons, poons are at the bottom. This term is generally found in the South.
I can't believe those poons tried to come to our sweet party mayne.
1) v. To ask for something immasculine in a masculine way
2) n. Pussy, Sex
3) n. Wuss, Mooch. One who borrows more money than will ever own in his life
1) Can I poon a ride home today?
2) Did you get any poon from that girl last night?
3)You're such a poon! You mooch off of everyone!