Why-ee indeed

I want to go see the Backstreet Boys in Vegas this summer, so I have been listening to them on my iPod recently. (Okay, I don't need an excuse. I just like them, okay??) And I've realized they have their own little dialect happening.

On "Everybody (Backstreet's Back)," they sing "everybah-day-ah" instead of just "everybody"

On "I Want it That Way," it's "tell me why-eee" instead of just "tell me why"

What IS that? Then again, NSYNC had "it's gonna be MAY," so maybe it's a boy band thing. We may never know.