I need your help!!

i've heard this song at the mall and at burger king..it's a mellow song by some chick and it goes something like..."why you do it.....what you do that for" thats like in the chorus part!!

Try Shania Twain's "Don't Gimme That, Once Over"
or
Whitney Houston (featuring Faith Evans & Kelly Price) "Heartbreak Hotel"

thanks atmaster but it's neither one...