The morning-after effect of a particularly good hot curry. Describes the flatulent anal-slapping one experiences when breaking wind. Severe curry slap may, in extreme cases, result in rectal prolapse leaving one in need of urgent medical attention.
Dude 1: "I will never drink and eat Indian food again."
Dude 2: "Why so Dawg?"
Dude 1: "'Cos today I got bad curry slap and my ass is broke."