The act of committing vandalism while blacked out on xanax and booze. Xanax, a prescription medication used to treat anxiety, can cause memory blackouts of hours or even days when consumed with alcohol. Regrettable behavior such as xandalism inevitably ensues.
Person 1: Did you hear about Brice? He took a fist full of xanax and drank a pint of Jack Daniel's, then he got arrested for smashing a churchwindow. He doesn't remember a thing!
Person 2: Damn, sounds like he some did xandalism then
The use of prescription anxiety medication (obtained either through a doctor or from friends) when experiencing a moment of extreme panic or facing a potentially stressful situation.
"Oh shit man, I ain't ready for that test...I gotta Xanax-up!"