look up any word, like blumpkin:
 
1.
The one friend who's the responsible drinker, but still likes to party hard.
she's a mamma bear!
by haygurlhay1234 January 09, 2011
 
2.
The most amazing, beautiful, unique, hilarious and sexy of all the female species in the universe. She is full of love and everything she does is perfect. She has been known to offer a roofie or two just before attacking.
If a woman ever does something that makes you feel like you've just experienced a perfect moment in life, then cracks a mom joke AND gives you a boner before you're done laughing, well my friend, you've just been attacked by MammaBear.
by AarBar July 04, 2013