If you are with a girl you know for example how would you be able to see the difference? Are shit-tests and teasing different in nature. Example:- I'm with a girl and she catches me looking at another girl and she says "Oh so you're checking them out? I think someone has a crush?" Would this just be playful banter or a shit test? Considering they say it with a smile.

I am aware of classic shit tests like IHABF and stuff like "Do you say that to other girls?"

Basically - what is the difference between shit tests and teasing.