Misery Hedge

Hedging your emotions by putting a bet on something you really don't want to happen, so at least you get paid if it does.

Dan: "I hope Man-U wins the cup, but I put a misery hedge on Arsenal just in case."
Matt: "How much did you put on Arsenal to win then"
Dan: "only £10. The winnings will be enough to wash away my tears if we lose".

Or

"I really hope Trump doesn't win the next election. As the odds are good, I guess I'll put $20 on him to win as a misery hedge so if he does, at least I get paid"