1 definition by Grace'N'Mercy

Top Definition
When a person is acting in a way that is considered to be very negative.
Roger on bull right now. He's been acting out ever since he found out he wasn't chosen for promotion.

Tito asked his mom for some funds to help him out, and she knows she got paid but says she broke. She On Bull.
by Grace'N'Mercy December 26, 2018

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