Arm condom 

Bag used to cover a cast

Kevin used an arm condom so that he could shower after he broke his wrist

Arm condom by Kevisneedsanrx April 4, 2017

arm barn 

shoving one's fist up one's ass. Similar to fisting only a funnier word.

hey sailor... wanna go home and arm barn me?

arm barn by foofykitty May 28, 2006

arm wrestling 

n. an ingenious sport that was invented to show ones skill or brute strength.

D.A. looks pretty skinny but he is a master at arm wresteling.

arm wrestling by Dustin A (aka D.A.) December 8, 2004

Arm Chair Athlete 

One who excessively criticises others athletic attempts while failing to excel or even attempt to achieve athletic success themselves.

"I can't watch the boxing with Dave anymore, he tuts all the time and says both guys are crap"
"Isn't Dave like 5 stone overweight"
"yep"
"And doesn't he get out of breath just going to the fridge"
"yep"
"what an arm chair athlete"
"yep"

Arm Chair Athlete by wolfman10 November 15, 2009

Arm-Swinger 

An arm-swinger is someone who swings their arms widely while they walk. People who swing their arms widely while they walk are generally over-weight, and tend to walk slowly. It is likely that a wide arm-swing is needed to counter-balance their large body mass while walking.

Arm-swingers are most notable when they walk in the middle of a busy sidewalk or corridor, thus inhibiting the ability of faster, non-arm swinging pedestrians to pass them. This can lead to great frustration and general deriding of fat people when one is in a hurry.

I would have just made my train today, but I got stuck behind a fucking arm-swinger when I was walking to the station.

Arm-Swinger by Mellonman November 24, 2009

arm slut 

A quiet and reserved good looking lady who never leaves her mans side, usually holding onto his arm or hand. The man knows if she does leave his side she may be getting tossed up in a nearby closet or pantry. How do you think they met?

Look at Nate's new arm slut. Every time I look at her she seductively smiles at me.

That arm slut has no man next to her. I'm making my move.

arm slut by Blake D. May 17, 2008

Arm triangle of insecurity 

A special pose used by women while taking photographs in an effort to reduce the appearance of arm fat. It is performed by standing at an angle towards the camera, with the exposed arm in an akimbo position. Typically, photos such as these appear on Facebook and dating websites. Also typically, the women who strike such a pose are fat and/or insecure about their body image.

Girl: Hey girls, let's all take a group photo
Guy: Wow look at those fatties using the arm triangle of insecurity, all at the same time.
Girl: Omg, we look amazing!

Arm triangle of insecurity by dunderball August 14, 2012