Definition of thigh-slapping in US English:

thigh-slapping

adjective

informal
  • See thigh-slapper

    • ‘There was much side-holding and thigh-slapping.’
    • ‘You'll have to imagine the many thigh-slapping moments, because they left them out of the script.’
    • ‘This provoked an outburst of uproarious, thigh-slapping mirth among the beefy barons of Novosti.’
    • ‘There is some thigh-slapping sarcasm in the comments, too.’
    • ‘We are hoarse from two hours of yelling and exhausted from the excitement of professional pantomime played just how it should be - in traditional, colourful, thigh-slapping style.’