Used almost exclusively by men. When a girl sends you a text message that confirms either directly or indirectly that you will get some from her, that message is known as a "Poon Ticket".
Guy 1: *phone goes off, indicating a text message* Dude! I'm getting some tonight!
Guy 2: Show me that text! *steals phone* Oh, damn, show me that Poon Ticket!
Guy 1: ULTISNECIOUS
Totally awesome, an expression of joyous wonder. From Arfenhouse.
B: HIGH FIVE!