What does wthau mean? View the definition of wthau and all related slang terms containing wthau below:
who the hell are you
Usage of WTHAU
WTHAU stands for the phrase 'who the hell are you.' It is used to jokingly ask someone's identity in a text message. For example, if someone online is making a surprise appearance, you can use this abbreviation to express your surprise.
Sample Text Message #1:
Hey, you're new here? WTHAU?
Sample Text Message #2:
Someone just joined the chat. WTHAU?