What does FIM mean?
Foot In Mouth
Other definitions of FIM:
All of our slang term and phrase definitions are made possible by our wonderful visitors. If you know of another definition of FIM that should be included here, please let us know.
How to use the term FIM:
There are no example uses of FIM at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

RLZE
realize

SORT
A term used to identify someone who is well-put together, attractive, and is likeable. From "Good Sort".

R2F
Ready To f**k

UMMC
You Make Me Crazy