When you see a mom or dad struggling with a tantrum-throwing kid in the airport or at the drugstore, don't roll your eyes and think, My kid would never do that. Because he will. I guarantee it.

There's nothing fun for a kid about sitting still and being quiet while you sip something they can't. And those little wine crackers only entertain them for so long (believe me, I've tried).

… or whatever other crazy, life-risking thing you've got on your bucket list.

These activities are frowned upon when you've got little ones at home who kind of depend on your not being injured. Or dead. So file under "before baby".

Sure, you'll get out to eat when you have kids. But when there's a sitter on the clock, you're more likely to pick a place you know will get you in and out, and not, say, that new pop-up restaurant 45 minutes away where they cook everything with a single match.

This one bears repeating. Seriously. Revel in the aloneness.

Anywhere. Together or solo, it doesn't matter — just relish in the complete silence or blast whatever kid-unfriendly music you like. Stop only when you want to or you need to, and enjoy the freedom. The car will never be the same post-baby.

If someone says, "Let's do ____." Do ____. Because you can.

You will likely never do this once you have kids unless A) you have the flu, in which case, not so enjoyable, or B) your kid has the flu, in which case said movies will likely feature talking rodents. Again, not so enjoyable.

You'll probably try this once you have kids, and it will seem great … until you get home and realize you still have to parent and bedtime isn't for another five hours. D'oh!

Get a white chair/couch/rug/anything else you wouldn't want stained. Leave your wineglass or coffee cup on it and watch it not get knocked over. Enjoy it while you can, because once there's a little one tottering around, you can kiss it good-bye!