jacketcoat 

asshole, retard, unworthy person, idiot, someone not worth your time and energy

Steve ignored Jennifer at the party. He's such a jacketcoat.

jacketcoat by Tootse July 23, 2010

Premature de-jacketulation 

The act of removing a coat or stopping wearing a coat too soon in the season- under the false assumption that it is warm enough to shed layers already.

Just one early sunny spring day and Chris seems it warm enough and foolishly leaves his coat at home - a prime case of premature de-jacketulation

Premature de-jacketulation by TildaSpinton May 8, 2018

Jacketcase

Some who belongs in a straight-jacket because they're either too hyper or insane to set still.

"Don't bring you kid back to this daycare anymore, he's a fucking jacketcase!"

"Dude, no offence, but your mom is a total jacketcase."

Jacketcase by 5h33pIN2goats September 28, 2011

jacketmouth 

A absolute moronic idiot with a small brain

Sheldon is such a jacketmouth for not knowing the answer to that question

jacketmouth by Toopvon March 15, 2023