bellyload 

Blowing your load all over her stomach/midsection.

I pulled out at the last second and gave her a bellyload full of cum.

bellyload by M.R. July 13, 2003

BellyLOL 

When you write two "L"s either side of your belly button to make it look like it says "LOL", the belly button being the "O".

Haha, while Sam was asleep, we gave him a BellyLOL and took pictures of it.

BellyLOL by Rohinian August 15, 2009

bellyboarding 

for a gal to have sex on top of a guy with a six -pack

Ann: "What were you doing last night?
Candi: "I was bellyboarding on Jeff. Best time ever!"

bellyboarding by ten speed November 9, 2007