A flabby upper arm that jiggles when you raise it and move it around, not unlike the arm of an overweight senior citizen who spends all her free time frantically waving her hand at the bingo table.
"Don't wave while wearing a short-sleeved shirt or people will see that you have a bad case of bingo arm."
by Kate the Grammar Vandal May 1, 2008

when you were born with freakishly long and hairy arms. can also be paired with freakishly long fingers also known as tentacle fingers
by Ogre Saliva August 20, 2020

by bureora hoshii October 27, 2021

by fringe-benefits-tax April 22, 2021

when you go to sleep with your arm in a circular shape, similar to a donut. Manys' preferred sleep position, although some deem it unhealthy.
Bro, I couldn't sleep at all last night. It's like there's no position that's comfortable.
Have you tried the arm donut? It gives a pretty good sleep.
Have you tried the arm donut? It gives a pretty good sleep.
by fellownapper July 1, 2020

by Shreksualovers December 10, 2019

Arms that are so muscular and toned that one punch would send the recipient straight to the emergency room.
Angelo: "Hey bro, step away from my girl!"
Ricky: "Who's gonna make me?!?"
Angelo: "Don't force me to bust out the ER arms!"
Ricky: "Who's gonna make me?!?"
Angelo: "Don't force me to bust out the ER arms!"
by saycreative August 12, 2013
