this is the wrong spelling of the granny expression wachaYARR
Gosh, get it right!
The meaning remains the same: except for the fact that wachayyar is usually used by wannabe grannies. So, BE A REAL GRAN!
Kid disguised as a granny: wachayyar! I can't find my teeth.
Wise Granny with an umbrella: I know you b^still believe in the little tooth fairy, kid. You're busted...wachaYARR! *waves umbrella and runs off*