I'm terrible with Kanji, so I can't really translate the upper parts, but I'm pretty sure that Mario and Luigi are just saying their trademarks, "Mamma Mia..." and "Oh no..." (Am I right to assume that this is Luigi's trademark?), respectively.

"that was quick" pool or whatever?

Iruel said:

I'm terrible with Kanji, so I can't really translate the upper parts, but I'm pretty sure that Mario and Luigi are just saying their trademarks, "Mamma Mia..." and "Oh no..." (Am I right to assume that this is Luigi's trademark?), respectively.

You are correct.