airjerking 

the hand motion of masturbation when you see either a sexy guy/girl, or something exciting and/or awesome happens to you. afterwards invisajizz often occurs, if the event is amazing.

Gina: I just airjerked to that guy over there.
Laura: I've been airjerking for ten minutes now.

airjerking by HarrisonHeezay August 27, 2009

Air jerking

Shaking your smart watch or phone to mimic movement so you don’t actually need to move

I didn’t close my rings today so I’ll just sit here air jerking while I finish my Cheetos

Air jerking by Sister Wives April 6, 2021