a collection of fat on and around the body of a lazy arse dad - belly, face, chin, arse or all of them
Mike: Hey Gary, its been a while how are.. whoooa what the hell is all that?
Gary: Oh man, thats my dadfat, too much sitting about eating crap food has taken it toll on me.
Mike: yeah id say, you got loads of dadfat there!
Gary: So have you by the looks of it!