What does IDKH mean?
I don't know how
Other definitions of IDKH:
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How to use the term IDKH:
There are no example uses of IDKH at this time. We would greatly appreciate your contribution if you would like to submit your own!
More slang terms:

BMW
Big Money Waster

SOOBS
saggy boobs

IINM
If I'm Not Mistaken

TTYAW
Talk to you after work