A ratskin generally refers to a person who is displaying rat-like qualities. The term can refer to a person who is acting stingy, odd, confusing, or a person who is being short-tempered in a manner that is laughable to those observing.
It is also sometimes used as an endearing greeting.
Noun: An unattractive girl who preys on drunken males. Once the sun goes down, the ratsnake slithers out of her snakehole for parties, tailgates, weekly drinking specials, and late night text messages. You do not want your friends to see this girl. She is always ready to go because she's never on her period. There is no need to wine and dine her as she would consider this an insult. She has an insatiable appetite for bourbon and cock. The ratsnake will believe anything you tell her, because she's dumb as shit.
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."