Top Definition
When you are not sure of someones name
I am going to have a beer with Craig and his girlfriend whatsherbutt
by DBCalgary December 26, 2009
1 more definition
5 Words related to whats-her-butt
what you call a girl when you dont know her name
Aren't you going to prom with whats-her-butt?
by Dr. MRW April 30, 2009

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