A spin off of the classic "what?", most commonly used by Grand Mananers.
David: "Did you take out the garbage?"
Dana: "whatty?"
Whatty defines a brown girl who knows how to ride dick and can make a boy come in 30 seconds
“do you know who the whattie thotties are?”
“no?”
“leave.”
Someone might ask another person "Whatty Ding" which means "what are you doing"
Something to say to a person who just said something to you and you were, like, totally not listening to them.
Co-Worker: Did you hear from Client X about Project Q?
Me: Whatty what-what?
a word Nathan used to describe he is confused but it is actual a symbol of not listening.
Jeremiah: that was a cool cat
Nathan: whatty what what
Jeremiah: faggot