Top definition
Same meaning as words such as 'Arse-hole', 'Jackass', and others. First used in a fanfiction by Keeper of Memory Pepperochu (Me) as an insult from a biker towards the villain, Tonnbey the Tonberry.
Biker: "Hey, butt-notch!"
Tonnbey: "Butt-notch? What the hell kind of name is 'butt-notch'?!"
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Some Guy: "Your brother is a jackass."
Some Other Guy: "Yeah, he's a real butt-notch."
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