Top Definition
Someone who says something stupid at the end of a good joke and ruins it for everyone. Replaces the punch line leaving the joke useless.
That was a going to be a good joke, but reagan the punch line killer ruined it.
by Camcollegenow January 31, 2008
5 Words related to Punch Line Killer

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.