an exclamation of shock, astonishment or sheer puzzlement, originating from North West London.
Dave(unknown person): Hello susan, how are you?
Susan: wtf mayyam?...

Scenario: walking down the road and seeing an unidentified object.
"wtf mayyam?"

Scenario 2: Waking up on the train at the last stop...
"wtf mayyam?"
by Flajhi's friend! March 07, 2009
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