Wow, you're really fast at replying to everything.

But, back to the topic. I'm pretty sure that in 'Thud', a dwarf in the Watch makes an excuse for a dwarf and troll fighting, saying that the dwarf had accidentally reached for the troll's drink, and it would have killed him. This was obviously not what really happened, but Vimes admires his fast thinking, so this is probably what would happen. I just thought that if a troll drink is enough to kill a human (or, at least, a dwarf), then the drugs would be even more lethal. If a two tonne troll gets really high, then what would happen to an 80kg human?