A recent party reminded me of this one: A new forestry graduate receives his first 5-year posting way out in the middle of a huge forest with no people around for miles. Included in the survival gear that they give him is, much to his surprise, a martini kit. When he asks why he's receiving a martini kit, he gets told, "Sometime, a few years down the road when the solitude really starts to get to you, you're going to remember your martini kit. You're going to pull it out and start making one and before you know it you're going to have somebody looking over your shoulder saying, 'That's not the correct way to make a martini!'"
(From the "Rest" of RHF)