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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!"
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by Snickerdoodlehg64 May 23, 2018
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