Top Definition
1)When a person sits down and his/her fat over lays over the belly button creating a smile. Then add the nipples and voila a belly smile!

2)Another way to call a person fat
1)Ay man, your belly smile is pretty happy.

2) Whoa, your belly smile IS HUGE!
by Mr. RedBar December 10, 2009
7 Words related to Belly Smile

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