Who walks in when I walk out? Who gives you that "hi baby" Who's the who, got me jealous of you. Who walks in when I walk out? Now don't you know you’re my baby, Who's the who, got me worrying too? Well, when we kiss, I kinda miss something that used to be. Everyday, while I'm away, I get a feeling that you're fooling me. Who walks in when I walk out? Who gives you that "hi baby" Who's the who, got me jealous of you?