One Thing Lyrics

Lyric discussion by HoseaFidel 

Cover art for One Thing lyrics by Amerie

I think it's about the moment of realisation that you want to be more than just friends with someone. They may have just said something or looked at you in a particular way. then bang. you want them. It does not say knock knock knock. she's just scatting. more like, nah nah nah nah nah oh. some talking is missing as well.