You have been a part of Team Avatar for a while and your stopping at a town currently. Right now you are all taking turns showering, it's your turn and you just got completely nude. Then Sokka opens the door

Sokka:With a traumatized look on his face "Sorry."

The others hear and run over you hear Katara start laughing

Toph: With an irritated look "I'm blind remember! Can you tell me what happened!"

Katara bends over to Toph's ear

Katara:"We just walked in on uhh, what's their name, naked."

You hear everyone start laughing even Aang, Suki, and Zuko