similar to the practice of boobfucking, this term refers to the sexual act between a man and woman such that the man takes his obese partner's fat rolls and wraps it around his wang and resumes to "fuck it" in them same manner until sexual culmination.
Hieu: Do you see that morbidly obese thing over there that resembles a female? I want to hook up with her and start rollfucking those flabs!
When a man has a rather plump girlfriend and he takes the excess skin from her stomach and raps it around his spam dagger
and procedes to fuck the roll of fat as if it where a pussy
Yo Jamie was totally roll fucking that bitch with the thunder thighs last night.