I don’t know about your kids, but mine were perfect angels at two. They were snuggly, they were respectful, they were adorable, they were brilliant, they were compliant. And the minute they turned three, angel became devil.

This year I’ve had the pleasure of raising two three-year-olds

That’s been wonderful, let me tell you. You know how three-year-olds ask a billion questions a day? Try having two of them. I’m so questioned out I could live the next 30 years without hearing another one, which won’t happen. I’ll hear another billion by the time I finish this sentence, because guess what? They’re still three!

Also, the number of times I’ve turned into a three-year-old is quite astounding. You’d think that after all these years – after, in fact, having survived three other three-year-olds – I would know better. But I’m still a sucker for getting into an argument with a threenager, mostly because they think they know EVERYTHING, and you know what? I’m the one who knows everything.

I can get myself into a lot of trouble if I say something like…

“Here’s your vitamin.”

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“You mean my melatonin,” one of the three-year-olds will say.

I don’t like misinformation, because I spent a decade as a reporter, so, of course I’m quick to correct them.

“No, it’s not melatonin. It’s called Focus Factor.”

“No. It’s melatonin.”

Which quickly disintegrates into a clipped, matter-of-fact answer by yours truly: “I can read. You can’t.”

“Mama, you’re doing your workout wrong,” they say when I’m actually busting my rear end to get ahead of the interval training video because I’m a beast.

No, I’m sorry, I know exactly what I’m doing and you should just shut your mouth if you don’t want an uppercut right to your jaw. (Not because I’d beat a kid who tells me I’m slacking while my heart rate is camped at 130, but because I’m doing uppercuts in my workout, and they’re leaning in too close to tell me I’m doing it wrong.)

“I didn’t have milk today,” is another one of my twins’ favourite things to say, even though the cup they’re staring at right this very minute still has three drops of milk in it because they just finished their glass.

Um, yes you did, blindy. (To be clear, these are only the things I think in my head.)

“I’ll put my jacket on,” they say on mornings when we’re already five minutes late for leaving, and, hey, who am I to argue, because I’m all for autonomy. Except one of them likes to turn his jackets inside out before putting it on, which I’m pretty sure defeats the purpose.

That’s not right. Yes it is. No it’s not. YES IT IS. Okay, then, wear it like that, genius.

They talk back, make threats and have their own ideas about the way things should be

They talk back about everything, they have their own ideas about the way things should be (I want the BLUE plate. There is no blue plate. I want the BLUE plate. You can have the yellow plate or the orange plate. I want the BLUE plate. Okay, you get nothing), they make ridiculous threats (I not eating ever again, because you said it’s still time to stay in our beds and I don’t want to nap. Okay, more for me.), they fight about everything (This is Lightning McQueen. No, THIS is Lightning McQueen. It’s the same car, guys.), they know everything, they break everything, they mess with everything, they can do everything themselves even if it means going the whole day with their shoes on the wrong feet.

We’re looking forward to year four with high hopes

So, if I had to choose a stretch of time in my parenting that I could leap over, it would be year three. Potty training comes at a distant second.

We’re looking forward to year four, with high hopes that three will be long gone and we will have our sweet little twins back.

Wait. I can’t remember. Were they ever sweet in the first place? (My grey hairs say no.)

A version of this article first appeared on Crash Test Parents. Follow Rachel on Twitter and Facebook.