Seeing a hot guy/girl and checking them out but you wouldn't actually want to date them, maybe because they're too hot for you or they look arrogant. So then you just do some window looking.
Veronika: *looking a guy from a distance*
Jennifer : Why dont you go talk to him?
Veronika: No way! I'm just doing some window looking, he seems full of himself with those wandering eyes and that smirk.