Is that so?

Oh!

Say, looks like they just put a fence around the place next door. Set-up for a pun. "Fence" is kakoi, so you're supposed to respond "Heeh, kakko ii." (If "heeh" is written with the hiragana へぇ～, it means "Wow, cool!" If you use the kanji 塀 (hei), it means "A fence is cool!" or "A fence? A fence is good."

No, no, that's not it.

So that was a lie? "Uso nano ka" in place of usual "Sou nano ka"