A girl who has wrapped herself around the object of her affection, normally during sloppy kissing and with use of at least one leg, so much so that she essentially becomes a belt.
"My mate had this chick all over him outside the pub with both legs off the ground around him. Lucky mofo looked like he was wearing a poon belt!"
by JT Amish May 11, 2009
Get the Poon Beltmug.