The nipple of a breastfeeding woman immediately after breastfeeding, due to its taffy-like elasticity.
Father: Wow honey, what happenned to your nipple?
Mother: Nothing, why?
Father: It's big...and stretchy!
Mother: Oh, that's just my gumby nipple!
Mother: Nothing, why?
Father: It's big...and stretchy!
Mother: Oh, that's just my gumby nipple!
by The Anonymous Rho October 17, 2009
Get the gumby nipplemug.