What the f* you on about?

A rude variation of the somewhat archaic (probably colloquial southern American) English phase "What you on about?" used when you have no idea what the other person is rambling on about and want them to explain what it's in reference to.
ted> OMG OMG OMG It's HUGE!!!
ted> Really, it's just so HUGE!! You wouldn't believe how HUGE!!
fred> WTFYOA?!

by protocol6 September 3, 2008
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