To do something terrible to someone, in order to neutralise their bad karma, thereby preventing unforeseen badness as a result of their current bad karma level.
"Dude, everyone in our group has had a bad breakup recently, and we all really like your girl. If you don't mind we're just going to give you a karmic vaccination by stripping you and taping you naked to this lamppost. You can thank us in your speech at the wedding.
by Waltonator December 15, 2014
Available Domains :D