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2.
Generously proportioned knickers. Underwear that also keep the belly warm. 'Apple Catchers'
After dinner she gave me the green light for some rumpy pumpy however the passion was killed when I discovered she was wearing belly warmers so big she could tuck her boobs in them.
by gmc August 08, 2006
 
1.
A woman that you are sleeping with. A female that is not a steady girlfriend, just an occasional lay.
From Roots Mini Series: A scene where slaves are being transported by ship to America.
Crew Member: "Captain"
Captain: "Yes"
Crew Member: "Will you be needing a belly warmer tonight?"
Captain: "No!, I do not believe in fornication"
by Ted Striker June 26, 2007