What does OTMH mean?
Off the top of my head
Other definitions of OTMH:
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How to use the term OTMH:
There are no example uses of OTMH at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

IMMOR
I Make My Own Rules

CMOS
Complementary Metal-Oxide Semiconductor

BESTIE
Best Friend

G
An abbreviation of the word gangster. This term grew in popularity within the 1990s hip-hop community.