When you reach a point of hunger that your stomach begins to make noise. The noise often sounds like growling. Seeing as lions growl, being hungry is often referred to as having "tummy lions."

see also: hungry
Lemur 1: Dude, what's that noise?
Lemur 2: Oh, that's just my tummy lions.
Lemur 1: When was the last time you ate?
Lemur 2: Oh, last Tuesday or so.
by Lexiboo Reilleh May 25, 2009
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