The act of packing another dude's ass with a steaming pile of cock. Or if one pack's so much fudge chunks come out.
"Dude, mike is such a fudge chunkin faggot".
"Hey nicole, you wanna fudge chunk tonight".
Scott - "Yo did you see that sandbagger fudge chunkin that jabroni last night"?
Mike - "Yea that was me you fuckin fag cock".
Scott - "Nice...".