Top Definition
SYMB4IFI- Shut Your Mouth Before I Fuck It
1. Your wife is yelling at you about something you turn to her a say SYMB4IFI.

2. Your in your car driving down the street you flip a butt out the window some tree hugger sees you and starts talking shit and you look at them and say SYMB4IFI.

3. You're at the library you and your friends are talking loudly and this

attractive female librarian walks over and says SHHHHH... SYMB4IFI
by pupdog23 June 05, 2011
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