Classmate 1: I need to relax this weekend
Classmate 2: Need a drink
C1: Smoke some weed
C3: Need something stronger. Get some heroin.
I: Sure, find the saphenous vein. Median malleoulus, 2 fingers up, 2 over, put in a line. You can run 500ml of heroin a minute.
C3: That's just twised.
I: Well, we haven't yet sworn to use our powers for good.