When lying down next to someone and your arm doesn't have anywhere to go except between yourself and the other person.
Lying next to your boyfriend or girlfriend on a couch and your arm lies in between each other's bodies. You have chastity arm.
by icallyourbluff December 4, 2011
Get the Chastity Armmug. 
A competitive sport, best played in public spaces. Won by penetrating the enclosed space created by a person's arm (when placing their hand on their hip/head/a wall/another person) with one's own arm, as many times as possible without being caught.
"Tim and I were arm-holing so many people on the dance-floor last night! He nearly got punched in the head!"
by Superfreak August 23, 2012
Get the Arm-holingmug. A maneuver performed to create more room in the stomach so that one can get the full value of his or her buffet experience. It begins by raising either arm so that the elbow is at a 90° followed by a twisting motion of the torso.
by jonny396099 August 18, 2014
Get the buffet armmug. In American football, when the offense has the ball late in the second quarter on third down and long, and often in their own territory, the quarterback will likely chuck up a prayer throw in hopes of getting a first down. An arm punt is when this pass is intercepted. This is not as much on the quarterback as a regular interception, because it is a desperation throw and, barring insane luck, a less risky throw would have zero chance at getting a first down.
In the 2016 NFC Championship Game, when the Packers had the ball on third and long with 2 minutes left in the half, Aaron Rodgers threw an arm punt to a Falcons defender.
by lemickeyratio February 21, 2022
Get the Arm Puntmug. by mia swallows July 24, 2006
Get the arm charmmug. by Autolab September 28, 2012
Get the Wanker's armmug.