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.
A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."