Been there,done that.
Any drug will render me shite behind the decks.(appart from the magical jack daniels) So,after a few lines of k and some mdma,I tried to play in the Red Star in brixton. I don't know for sure,but I think I f*cked every mix,so I basicly did what you did,made them as quick as possible. People didn't seem to mind,but I did,it felt horrible.
Another time,combo of too much beer,and looking at a turning records,made me run out with my hands over my mouth,only for me to spray frothy vom all down the entrance to these posh appartments. Not my proudest moment.