1.) Watching friends, family and complete strangers get drunk, stoned or whatever. It’s much funnier if you’re remaining in a lucid state yourself, as you’re privy to the gradual disintegration of their state of mind – and the worse they get, the stupider the things they do, the more amused you’ll be. (Usually. If they’re violent in this state, make sure they’re arrested – which is also amusing to watch.)

2.) Riding a toboggan down a steep, snowy hill. It’s always fun. Always. The sled is the layman’s version of the jet fighter: you’re at the mercy of forces you can’t fully control, and you aren’t sure you’re still be alive by the end. That kick of adrenaline as you close in on a solid, dangerous object at high speeds is fantastic.

3.) Popping bubble wrap. Why’s it fun? We don’t know. And if we ever do find out, it might cease to be fun – so just let it be, grab a roll of the stuff and pop all day long.

4.) Trying to shoot the dog in Duck Hunt. It’s frustrating, yes, but that doesn’t make it any less addictive – lord but that pooch deserves a good bullet to the face. And even though others have created simulators wherein you CAN shoot the thing, it’s just not the same.

5.) And, last but best, cleavage. Oh man.

(Feel free to add your own favorites in the comments. These are hardly set in stone.)