When you go to a club, get drunk, and leave with a woman, not knowing she is hideous. You then return to her apartment, and you sober up before you are about to have sex. Though you realize she is unattractive, you still fuck her. You then proceed to bust your nut quickly, somewhere between five or ten minutes. Once you nut, you immediately pull out, grab your clothes, and bolt out of her house. Just as The Flash would do.
Dude 1: "Bro what happened to you last night? You left with some ugly chick."
Dude 2: "I know man. Lets just say i was The Flash last night. I got to her house at around 1:00 and was home at 1:09."