1 definition by FunWordSmith
(noun) Liner for men's tighty whitey underpants designed to be replaced once soiled. Analogous to women's panty liner, but manties have a more interesting and manly appearance (emblazoned with sports team logos, camouflage, etc.).
The day after a chili dinner, John avoided bacon strips by swapping out his manties every few hours.
by FunWordSmith February 7, 2013