Top Definition
- I found your mom under my bed.
Used to break up awkward silences.
ZOMG_LITTLEGIRL_505 (9:05:34PM): yeah you're sexy too.
FAT_FART_99 (9:30:32PM): IFYMUMB
ZOMG_LITTLEGIRL_505 (9:30:50PM): you can find me under there!
by Allyson June 19, 2006
5 Words related to IFYMUMB

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