don't mention it, not at all, think nothing of it, you're welcome

there is no one, there isn't a soul

(idiomatic) It’s not that bad; said to de-dramatize an event

youth must have its fling; boys will be boys

(informal) what can I say, there's no doubt about it, you have to admit it

never say never

youth isn't what it used to be! the youth are all rotten!

Alternative form of il n'y a pas le feu au lac

(informal) great, that's just what we needed; that takes the cake; that's the last thing we needed

seasons don't count for anything anymore! (used to complain that seasons aren't as well-defined as they used to be)