look up any word, like blumpkin:
 
1.
when a girls tummy gets pudgy,round and soft from having too much semen in her diet
amys developing a cum belly from drinking so much cum and sucking so much dick. her cum belly hangs out when she sits down. she rubs it while shes on her kness sucking cock
by amy September 24, 2003
 
2.
Similar in size and and shape to a gunt. Develops on sorority sisters after excessive sonsumption of semen. Driving a Volkswagen Jetta increases the liklihood of developing a cum belly.
She spent all her weekends at the frat house and all she has to show for it is a raw twat and a cum belly.
by Dumpah January 12, 2003
 
3.
A fat woman's belly, typically seen protruding between a midriff shirt and low rise jeans. Often has the appearance of a blubbery spare tire. Generally makes an excellent jerk-off location.
Look at the cumbelly on that fat hoe! Feed that bitch a sausage and she'll let you have your way.
by Lucy Cumbelly May 09, 2007