Sao'ing

When you spontaneously start to climax for no reason in you're anus.

Spontaneous anal orgasm.

Basically when you cum, anally for no reason at random.

Guy 1:

Uhh yeah I'll have a Big Mac with a Coke..

Oh jeeeeeyzuz Christ I think I'm gonna bust what's going on! Ughgggghhhhhh bro what's happening ?

Guy 2: jeeeeazuz Christ bro. I think you are Sao'ing mkay ?