Reply to Tell the truth: Have you ever faked djing?

Just the other day i was at this party, where a very known dj in my area was spinning, and going backstage i noticed a youtube tab open with a "2013 boom megamix" video playing. He was just pretending to mix on his ddj-t1, mashing buttons and rotating knobs like crazy. I'm not hating on him, because i don't know the whole story behind it, so here goes the question:

Now, my question is: honestly, have you ever been in a situation where, for a reason or another, you just weren't feeling like mixing? Say, a sleepless evening before the gig, or a strong headache, or just one too many shots or glasses of wine and you feared the worst trainwreck humanly possible?

I can in all honesty say i never faked, except for loading 10min mixes to go to the toilet, or maybe twisting some knobs when drunken people came to the booth saying "can i do wiki wiki on the dj stuff oooh and how do you do that and what is that light over there and play levels"

How about you?