A Grouper is an enormous women usually weighing at least 200+ pounds. A Grouper usually smells like a run down cheese factory due to the obscene amount of calories shovelled into their gullet.
A Grouper is an absolute menace to anything even remotely heathy. They can often be found having a field day at the buffet table.
Ben: hey man, did you smell that fat lady with the stature of a Cape buffalo back there?
Adam: yea, she had to be a grouper!
By Jere
Grouper
A person who changes gender or sexual orientation later in life much like the way that a grouper can change sexes after maturity but never in a hot coed porno kind of way.
"I can't believe my wife of 20 years went grouper on me and started bangin' bull-dikes"
"Bruce Jenner turned grouper and is now Caitlyn Jenner - from Wheaties to Froot-Loops at 50 years of age."
Mark: Who was that ugly chick back there who wouldn't shut her fucking face?
Jeff: That's Gina, man. She's a huge grouper.
By Cordula
Grouper
A moocher, a leach, a bottom feeding fish. Someone who tags along to parties they aren't invited to. Claims to be friends with people he/she has only met once. Likes all posts on social media by people considered popular.
Who is that girl at the bar? I don't know, must be some grouper that snuck in with Jeff.
Comes from the well known fish species assynidae - often used to describe someone in a non-complimentary fashion. He is a massive grouper - he is a large, fat, "fish" - derogatory term used especially in card games.
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.