Always on a Female, it's when she first notices small bit of fluff on her upper lip, she then shaves it off- not knowing that for life she is going to have a dirty moustache. She will then try to cover it up with some cheap poundshop makeup.
The act of soaking a mouse in 100 proof alcohol and inserting it into a person anus and letting it wiggle around to arouse the prostate and get you intoxicated.