look up any word, like blumpkin:
 
1.
Sexual games involving chocolate bars.

The term originated with a Finger of Fudge (F.o.F) although any robust confectionary can be used for a “ foffing “ session, until melted or weakened beyond use.
Examples.

1. Having consumed two-bottles of the finest Rioja, they decided that a finger of fudge was probably just enough, and foffed until late afternoon.

2. Timo said he would get the bill, but suggested they may want to return for a final foffing before vacating their room.
by The Jazzmeistergeneral November 09, 2009