Just recently I blacked out for several hours after taking a Xanax and/or Valium after doing meth all day. I had no tolerance for the meth or benzos... So I must've taken more afterwards. After being blacked out for some unknown amount of time, during which I must've been smoking more meth, I just suddenly snapped back to consciousness in my apartment and it was a mess, as was my part of my downstairs neighbor's (landlords) apartment, as I found out the next day... In my stupor, I had let myself into their backdoor sometime after midnight and spooked the shit out of them and was spilling drops of half-freebased meth off of foil all over the floor. I had also mixed it in some minced onions and cheese on the foil for some damn reason. That was one of the most mortifying experiences of my life and has so far kept me sober ever since. I'm very lucky that they didn't call the cops on me or even evict me. My landlord said to me, "It's OK. It was out of character. I know you're a good guy and these things happen once in a man's life, but just don't let it happen ever again." World's best landlord.
Moral of the story: you never know what can happen when you combine drugs of all kinds and especially what you might do afterwards.