Top definition
Taking a "massive" dump and not flushing it. Massive Dump, No Flush
I took a MDNF in the CEO’s private bathroom.
by Nathan November 09, 2004
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Aug 11 Word of the Day
You can tell by the way she walks, she got that WAP.

You can look at her face and tell she ain't got that WAP.
by Black Don August 06, 2020
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2
the hipster way to say "my dick needs fucking"

often thrown into random conversations
"hey joe whats up"
"MDNF!!!"
"WTF does that mean?!?!"
"oh; you know ;"
by Simpy April 26, 2009
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