Annoying as fuck combination of words that dosent indentify a person, it is essantialy identifying their face!
Dude1: Dude, i smoked out that one girl, um whats-her-face? uh-

Dude 2: Dude, stop right there, are you asking what her face is, or asking who she is? If you want to know who she is, then fucking say Whats-her-name!
by imrightbitch! September 5, 2006
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When you don't know a persons name, instead of saying "what's her name" you say "what's her nuts"
So I was talking to whats her nuts.

Also:
What's her/his titties
What's her/his fuck
by Lathey August 21, 2006
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Phrase use directly in place of “What is his or her name?”
Hey Loren, remember that guy at the party, what's his fuck?
by max August 20, 2004
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This is when you are in a conversation and you can't recall the person's name you are refering to.
"What's her/his fuck got real drunk last night." - (insert name)
"Wait, who are you talking about?"
-Max
"I don't know. What's her/his fuck"
-(insert name)
by LOREN August 20, 2004
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Phrase used directly in place of "What's her/his name?"
What's his nuts? Didn't he go out with what's her cunt?
by Alienthropologist October 23, 2004
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A derivative of the common phrase, thats what she said, is that what you told her is a response to any sentence that contains sexual innuendoes. It is best used in a sentence involving fitting something into a hole or something being inadequate.
"Are you sure it can fit in there?"
"Is that what you told her?"

"It was fun but it wasn't something i would do more than once."
"Is that what you told her?"

"That was amazing!"
"Is that what you told her?"
by Ryan J W January 5, 2009
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What the mechanic at LS Customs says to you, as you roll up in a flaming car with no doors.
*drives to LS customs in a bucket*
Mechanic: "What's wrong with her now?"
by CCW2013 June 5, 2020
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