cumfounded
as if struck by cum with astonishment and surprise
Thad stood there cumfounded after Blaine unleashed load all over him.
Cumfounded
Surprise and astonishment as though one was struck by a load of cum.
Tony was completely cumfounded when Matt came out of the closet.
Cumfound
-the state one finds themselves in after an exceptional orgasm. (synonym: dumbfound)
So, met this smokin' hot chick at the bar, went back to her place. I was cumfound. Best sex ever!