"to move about restlessly," mid-15c., perhaps a variant of frisk (q.v.). As a euphemism for "to fuck" it dates from 1590s, later "to masturbate" (1670s).
tr & in. to copulate [with] someone. (Usually objectionable.) : Bob and Mary were in the back room frigging.
tv. to ruin something; to fuck (sth) up. : Somebody frigged my rear bumper.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
Cite This Source