Phrase in British slang originating from Jamaican Patois, the original phrase being "Wha yu ah seh,"
Like it's Jamaican equivalent, it is often used as a greeting to
ask "how are you," or "How's it going."
This phrase is best avoided in any setting besides
casual greetings where slang is appropriate.
This phrase isn't to be confused with "What are you saying" an informal question asking someone to repeat what they
said.