Top definition
The act of never-ending laughter that usually ends with an uncomfortable joke that is meant to continue the laughter, or when someone's mom gets hit by a car and dies.
"Dude, that joke made me sedlak up until Matt's mom got hit by that car and died."

"I told my mom a joke that made her sedlak, until she got hit by a car and died."
by Cornholio Sean November 11, 2007
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