A person in your life (usually older than you by a few years) that takes you under their wing and teaches you all they know about marijuana. Lessons include: 'how to smoke', 'how to roll a joint', 'how to satisfy the munchies' and 'how to make your own bong'.
Duder 1: "So what are we doing here at your friends place?"
Duder 2: "Check this."
Duder 1: "Whoa dude is that what I think it is? I don't know how to use that."
Duder 2: "Don't worry man, I'll be your weed mentor."
Prices shown in USD.