Shleesh means a slag. Someone who if you saw a party you'd stay away from because she's been around a lot. Often a very good looking girl but for your own good/safety, you'd stay right away.
Pete: Hey, that Laura's fit as fook!
Bob: Pete seriously, shes a full on shleesh, trust.
Pete: Oh, ok.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."