Ralen said: mekujira tateru = "To get worked up over something minor." me kujira = "Eye whale."
Wow. It'd be great if the "eye" pun could've been worked in somehow, since the whale's shown as a cyclops, but darned if I can think of a better choice than you made for localizing that one.
Kyon, you dummy, don't make Mikuru-chan cry!You're blaming me!?Wheeee!I don't need to be lectured by Haruhi's yes man.Look, you've frightened Asahina-san and made her cry.Now now, there's no need to whale after her for having childlike enthusiasm.*pssshhh*Ha-wa-wa-waHey!
No jumping on the sofa!Stop having fun, I'm not trying to play with you.Imagining sending a whale after her.Piiiiii