I don't know if it was excitement or what, but I used to have to shit EVERY time that i got home from getting a sack of coke, so my routine was drop the bomb and then do my first couple lines on the toilet. Then when I became addicted to dope I was always taking the bus to the same little shopping center to get mine, and on cue 100% of the time, I'd feel the bubble gut right around the middle of the bus trip and then I'd have to run to the Burger King or Quiznos bathroom before I could actually pick it up.