A sexual manuever involving the slapping of one's erect penis on the cheek and or forehead of the sexual counterpart. It is imperative that semen is present at the tip of the schlong. After the slapping is complete the male writes a note to the woman and sticks it to her face.
When you are so drunk you a) don't recall 90% of the night b)throw up somewhere besides a toilet c) sleep somewhere you definitely shouldn't be (ex: behind an eye doctors office where bums urinate)
"Ashley slept behind the eye doctor last night right where bums take dookies."
"Wow, she must have been schlackled!"