Top Definition
somthing that is really good or you like a lot or a compliment
your suit is heavy duty.
that bitch has some heavy duty tits
by meach October 01, 2003
The duty or act of getting with the fat friend in the group of girls we are trying to have sex that night.
Taking one for the team
Sorry Bro, looks like your on heavy duty tonite.
by Phucker January 14, 2007
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