Guard: Wait! What's the matter with him? (Katara puts her hand on Sokka's shoulder.)
Katara: Uh, he has pentapox, sir.
(The guard walks up to Sokka and moves forward to touch him.)
Katara: Umm... it's highly contagious.
(The guard pulls his hand back as Sokka starts to make awful "sickness" groans.)
Sokka: Ughhhh... it's so awful... I'm dying.
Katara: ..and deadly. (Sokka continues to moan as if he was in horrible pain.)