普通に futsuu ni

Older listeners hear an insult where none is meant. 普通に literally says normally, so 普通においしい sounds to them like merely acceptable, faint praise at best. Younger speakers mean the opposite: no allowances made, no special pleading, genuinely good by ordinary standards.

The logic makes sense once you see the problem it solves. When compliments are inflated by habit, the ordinary word becomes the honest one, and plainness itself turns into a guarantee of sincerity. This is one of the most discussed youth usages, argued over in language columns for two decades, and it has quietly won. Plenty of people who once objected to it now say it without noticing.