comes from the action, facepalm (see definition). 1) comes after someone facepalms 2) Asspalming is when you smack your hand on to someone's ass, full palm grab.
1)
James: touching my hair is a big no no
Jez: *touches James' hair with her fingertips and runs away*
James: *facepalms*
Dee: *asspalms*
2) Toy: *asspalms D*
