An expression of frustration by a geek, nerd or Christian who does not like to swear.
1. "Oh my phone battery is dying and I need to catch this Mewtwo Pokemon! Motherpepper!"
2. "My boss hates me. He's such a Motherpepper!"
3. "You just stole my car spot, Motherpepper!"
A PG way to say motherfucker. It was often used in clean versions of movies where they didn't want to censor it the normal way.
David : * in sync with the TV * Die motherflipper
Wife : * in sync with the TV * Die motherfucker
David : Stop swearing, this is the clean edit version
Wife : Oh shut up you pussy