Noun. : an evening spent doing all kinds of deplorable things, interacting with others in mostly lewd ways, and making choices which no sane individual could even dream. And then remembering nothing but a few "snap-shots" of it the next day or reading it in the police report.
I was so drunk last night. I was on a roving blackout and had to read my sent texts and check my credit card receipts, I had no idea where I was or what I did.