(humorous) Said of a person who habitually mislays things.

Expressing regret at something that cannot now be changed. (This stems from expressing that someone could have, would have and/or should have done something)

A response to someone wishing for something, conveying that merely wishing for something has no effect or is of no use.

Used to suggest dating someone.

Politely asks someone in a vehicle to put on their seat belt.

(colloquial, sarcastic) A rhetorical question used to discourage the interlocutor from blind obedience.

Alternative form of if someone told you to jump off a bridge, would you do it

One should treat others as one would like others to treat oneself; an expression of the golden rule.