"Don't you eat tentacles and suckers?" Karla protested, because that obviously needed to be pointed out. "You can't flail around about snailes and attract all the attention ever when you eat tentacles!"

This argument was to...establish their cover. Yes. See how they're not even paying attention to the couple across the way? So just continue your date, nothing to see here!

...Except, you know, an argument about tentacles. Ew.