Sokka grins. Because if Loo starts crying for lack of toy now, it's totally not his fault.

"Oh, that toy!" he exclaims, suddenly seeing the light - and tugging on the back of Loo's shirt again. Not hard, just trying to annoy her. "I think Mom just stole it from me. You know how she is, Loo, always stealin' stuff."

And since Mom will be in trouble now, Sokka takes the opportunity to let out another war cry/growl and tackle Hana for continued tickles.