punch line

US /ˈpʌntʃ ˌlaɪn/
UK /ˈpʌntʃ ˌlaɪn/
"punch line" picture
1.

clou, pointe

the final phrase or sentence of a joke or story, providing the humor or climax

:
Everyone laughed at the unexpected punch line.
Iedereen lachte om de onverwachte clou.
He delivered the punch line with perfect timing.
Hij bracht de clou met perfecte timing.