Not quite as bad as "small dick energy," but sort of a middle ground. No swag, harmless, forgetable, sexually invisible, insecure men who wear button down shirts as general fashion have this kind of "energy." Sort of a beta male.
Susie: "I'm going on a date with Thad tonight."
Kara: "Why not go on a date with Brad?"
Susie: "Ew. He's got real button down shirt energy."
That bit just between the butt and the top of the back of the thigh, where if you kind of tickle it a little bit the person has to reflexively and involuntarily sit down.
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."