Quote mutilation.
Aang: Walking stinks! How do people go anywhere without a flying bison?
Katara: I don't know Aang. Why don't you ask Sokka's _____s? they seem to know everything.
Sokka: Ha ha. Very funny.
Aang: I'm tired of carrying this pack.
Katara: You know who you should ask to carry it for a while? Sokka's _____s!