when a guy applies marshmallow fluff to his penis and has a girl suck it off until he climaxes, at which point he busts his nut all over her. hence the name "fluff-n-nut-her"
I asked maria if i could fluff-n-nut-her but she said only whores and sluts do that. shot downnnnn
A trip to a grocery store, convenience store, or gas station for the sole purpose of buying an excessive amount of junk food and sugary drinks, usually with friends. A chud run often happens late at night and ends with everyone involved hating themselves afterwards.