[Bobby's tromping along behind Asuka, so he sees the snowball whiz past him and smack into the back of Asuka's head. He turns around immediately, looking for the culprit, but sees no one but the snowman.

And then, of course, Asuka's blaming Bobby for it.]

What? Me? I didn-

[He pauses.]

There's so no point in trying to convince you I didn't do that, is there? No one ever believes the guy who says he didn't throw something until they actually find the big monster or whatever it is that's really responsible.

[Not to mention they've already had a conversation about how Bobby probably deserves it when people blame him for things.]