knee-slapper
[ nee-slap-er ]
/ ˈniˌslæp ər /
noun Informal.
a joke evoking boisterous hilarity.
Origin of knee-slapper
An Americanism dating back to 1965–70
Words nearby knee-slapper
knee-high,
knee-high to a grasshopper,
knee-jerk,
knee-jerk reflex,
knee-length,
knee-slapper,
knee-socks,
knee-sprung,
knee-trembling,
kneeboard,
kneecap