When you notice that someone has purchased an extremely tacky, often expensive accessory or piece of clothing and you ask yourself, "Why the hell did they buy that?". These items tend to not fit the buyer's personality at all and can be seen from a mile away.
The definition of whylu may vary, it is i word said at random times to make people laugh because they know what the insider is and it can just be said to surprise someone.
ENGLAND: i'm 6'2", Ryan is taller than me, Mario is 6'0" (rounding up), and Cicero is 5'1"
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MARIO: that makes Cicero the whyu
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CICERO: damn...
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RYAN: Cicero that is really lame
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ENGLAND: no, actually, the whyi were considered great demi-gods in ancient canadian mythology ----
Mario: yes, but now we know better