(idiomatic) I strongly believe.

Some things cannot be undone.

Used to remind someone that they were already warned by the speaker/writer that a certain event would happen.

(vulgar, idiomatic) Something inherently bad cannot be improved.

(idiomatic, in response to another person) That is very true.

(literally) Offering unlimited food to a diner at a restaurant for a fixed price for as long as he or she continues to eat.

(idiomatic) Used to ask someone if they are willing to do something. / (idiomatic) Used to remind a child to say a polite expression.

(humorous) thank you very much

Used to ask to kiss a person.

Used to ask the interlocutor whether or not he/she has met the speaker before.