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1.
The act of getting so drunk that you make the decision to let multiple random men penetrate you.
Girl 1: I don't remember what I did last night. I was so drunk.

Girl 2: How do you not remember getting Kirstened last night by those 5 guys from the bar?

Girl 1: Oh know, not again.
by bigbbbad2 November 12, 2011
 
2.
the action of one party, esp. an actor, dating another party under false pretenses followed by lying and saying that he/she got married in order to let the other party know the dating process has been concluded.
"Girrrrrllll, did you hear what happened to Maria?"
"No, what happened??"
"She was dating that actor guy and got straight KIRSTENED!!"
"DAAAAAMMMMNNN!!! That's fucked up."
by E-dizzub June 26, 2007