The feeling of ecstasy one feels after completing a fulfilling meal of soup, making one completely relaxed.
I'm staying in tonight, I have Soup Belly and I'm good to go.
by Fitty4ex June 18, 2007
1 more definition
A stomach that has a belly button large enough to eat a can of soup out of. Obviously derrogatory towards fat people.
Look at that soup belly.
by racingsmythe29 May 16, 2009