I don't mess with vending machines, and I suggest you do the same. They have deep pockets in the Underground of the Source engine, they'll frak you over in ways that you didn't think were possible. They seem harmless right? But that's just their game, they're more untrustworthy than the damned Companion Cube paired up with reverse psychology. You'll have unimaginable nightmares man, leave them the hell alone!
Oh, don't be such a baby. Episode 3 will come out.