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1.
pnf
Pre-Natal Fingering:

When a man fingers his wife during pregnancy to determine whether the child has hair or not.
pnf
by garry gonorrheaaaaaa December 10, 2010
6 1
 
2.
PNF
Poofy nipple factor. Enough said.
Man, did you see the size of that chick's nipples!? She had mad PNF!
by Kevin Raymond April 03, 2008
9 4