Let them laugh that win.

The saying grants the right to celebrate or mock to those who have actually prevailed. It directs attention away from premature boasting and toward the outcome that decides whose confidence was justified.

It can also express a resigned willingness to endure rivals' laughter until the contest is settled. The eventual winner, rather than the loudest participant during the struggle, is presented as having the final cause for amusement.

Use it when success in a contest, dispute, or difficult undertaking will settle competing claims. It may caution against celebrating too early, or acknowledge that the victorious side will have the last laugh.