Sleep-stalking 

The act of waking (usu. in an ambien induced state of mind) in the middle of the night and posting comments on your friends' Facebook pages that you don't remember in the morning.

I think I was sleep-stalking last night--I "liked" a bunch of photos on my ex's Facebook page!

Sleep-stalking by muh-drees February 13, 2013

Michigan Slee Stacking

When you and four of your friends roll up on a chick and presuaivly convince the chick to take all of you on at one time in a discreet or a non-discreet location.

Michigan Slee Stacking, Me and my firends rolled up on her and Michigan Slee Stacked her.

Michigan Slee Stacking by Chickenhawk7 July 25, 2011

sleepstalking 

The act of appearing outside an ex's home at night in pajamas, loudly proclaiming love and adoration, and, if rejected, pretending to wake up with no idea of why you are there.

Ex: "What are you doing? Go home!"
You: (Pretending to wake) "What? Oh, sorry, I must've been sleepstalking again."

sleepstalking by Inane Alaina October 24, 2012