I tried my best to translate it, but I don't get the third panel (the closest I could find was 遠慮, which doesn't make sense to me). Also, I think there's a pun somewhere in 象が踏だら and Okuu's "elephant foot".
It'd be a treat if someone fixed up my translation ^.^()
-CK...!!!Okuu, Okuu
I got my hands on something rareThey said this pencil case wouldn't break even if an elephant stepped on it!When Okuu steps on itCan I try stepping on it?Sure, sure!Alright then, I won't hold ba......That sounds fishy...