[He takes this as invitation to launch into his own mildly related story.]

Well at Omashu they have slides going throughout the city that are controlled with earthbending. They're supposed to only be used for mail, but me and Bumi used to ride down the slides all the time. And then when I went there with Katara and Sokka not long after I first met them, I took them on the slides too, and we had lots of fun but we got in trouble too!