The act of waking up in the morning thinking "WTF happened last night". Closely followed by vauge memories of copious amounts of alcohol and saliva and the faint wiff of cheap cologne. If you were the drunkest girl at the party, Jay probably pulled you!
"Oh my god, last night I was nearly Jay-Raped by Ronald McDonald."
"OK, hands up anyone who hasn't been Jay-Raped!?!"