Armswing 

To extend your hand, palm upwards in a claw and swing downwards. This is usually used as a sign of surprise or extreme disappointment and anger at something where no other action can describe it.

Dude, *armswings*, I mean it's like, *armswings*, never,ind, i just can't explain it!

Armswing by ArmswingGod December 17, 2016

Awkward Arm Swing 

1. The act of swinging one's arm like a pendulum in the presence of an awkward situation. Bend at the elbow, and let hang.

I hooked up with her boyfriend last night.
- awkward arm swing -

Awkward Arm Swing by skurins June 17, 2007

Armswinger

A short obese women who is so fat that she must swing her arms while walking.

That armswinger just nailed me in the dick when she walked by.

Armswinger by donkey dan September 12, 2013

armswinger

office employees who do not take work home with them, so they are free to swing their arms as they leave work. Implies minimal commitment to the job.

"Take your briefcase with you -- don't want to look like an armswinger these days."

armswinger by somewhere in an office January 13, 2009