A clinically obese vagina where you can easily mistake folds of skin for labia.
Her twatopotamus needs to hop on a treadmill.
by Marc Frey January 25, 2004
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A fat bitchy woman. Someone who is acting like a bitch or complaining nonstop about pointless things.
Hey, quit being a twatopotamus and whining about you non-existent love life you cow.
by ronjonr2 December 24, 2010
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