Tudelu comes from tüdelü. You say tüdelü instead of bye.
But Tudelu is different. A girl who called Tudelu is cute, friendly and responsibility. She loves all the people and the people love her. But some people are jealous and hate her but she doesn't care.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"