When you go into a restroom with flip flops and the person next to you is splattering piss on your feet. Or in rare occasions it can be your own.
My girlfriend asked me why my feet were all wet after leaving the restroom at the state fair. I explained to her that I was just pisstall whipped in there, but it's ok.. my feet were hot.
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."