Gin

[Captain...]

Pah, just buy them one and tell them it's vodka. Once they drink it they'll know the difference, but it'll be too late. That might be why the ale society I run is down to just me and one other person - attempting to torture the lesser members.

That reminds me of a story, we had finished off a housemate's gin the night before and whilst drunk and feeling guilty/stupid we decided to replace it with water so he wouldn't notice. Sobered up the next evening we realised that was a dumb thing to do so we asked if we could drink some, it was only cheap stuff possibly from netto, he said alright, you got any mixers, we said nah, we'll drink it neat, a couple of us took a few sips from the bottle and pulled disgusted faces then passed it to a female housemate, who was mainly responsible for us drinking it all the night before and she necked what was left of the 'gin', a good 150ml of it, and then handed the empty bottle to the owner.

Shocked and impressed and not wanting to be out done by a girl, the owner of the gin then grabbed his bottle of vodka with a similar amount left and necked that in one.

We admitted to him later it was just water she had necked but by that point he was feeling decidedly ill, he didn't come out with us that night.