Not so much anymore because I'm not paranoid, I'm either sick or high, but when I did coke we had plenty of those things that have to be done one way and not any other. I don't think superstition is the right word, more just like stupid tweaker rules.
Coke had to be fucking cut up by one person (me) and then next person lines it up while third rolls bills. Otherwise bad shit would happen. Like I let this fool cut it up once and sure enough we get pulled over in one of those seat belt checks. I grabbed the shit when the cops weren't looking and spilled it all onto the floor. The driver didn't have her belt on and so they told us to go into this parking lot, and they bullshitted us around, and made me make the coke disappear into the floor.
Or certain people couldn't do coke with certain other people. I remember one girl 'figured out' that I was bad luck and so we had to go and get the shit then split it up and do it in separate rooms.
Foolish things like that.
I'd say I'm not really superstitious though. Only when tripping or tweaking.