Nottablak

Not a black eye. Any injury gathered from participation in a sport, walking into a door, or getting drunk and falling over, but which is interpretted by everyone else as being the result of a fight or beating.

Despite your protestations, everyone will believe you got a drubbing anyway.

Bert: Woooo. Your girlfriend give you that black eye? I saw her haircut went a bit wrong.

Ernie: No, it's a nottablak - I walked into the door of the pub at closing time last night.

Bert: Yeah, right. Better buy her some flowers.