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This Is The Cutest North & Penelope Video Yet

Even if you're not Keeping Up With Kardashians' number-one fan, you have to admit that the youngest Kardashian-Jenner family members are absolutely adorable. No, not Kendall or Kylie. I'm talking about Kim and Kourtney Kardashian's children. Penelope Disick turned 4 on Friday, so of course Kim posted an Instagram of Penelope and North West to celebrate. In fact, it may be my favorite video of all time. It's so sweet that these cousins are as close as their moms are. Along with the cute clip, Kim K wrote,

Whatever secret language u girls speak, the way you girls protect each other & love each other is so special. Penelope, North is so lucky to have a best friend like you! Happy Birthday my sweet P. I love you to the moon and back!

Although it's impossible to understand what they're actually saying, their enthusiasm transcends the language barrier. Still, it's fun to wonder what this all means. Maybe they were talking about the last shocking thing Uncle Kanye said. Or perhaps they're saying that soon they're going to have their own fashion line, a la Aunts Kylie and Kendall. Maybe they're talking about mermaids (their favorite). Or the most likely option — it's probably pure nonsense. Watch the video below and try to figure it out for yourself.

Sure, they have their share of arguments, but the Kardashian siblings always have each others backs at the end of the day. It's great to see they're raising the next generation to be the same way. They might not speak coherent English, but North and P don't have to, since they've got such an unbreakable bond. They're always hanging out and seem to be having a better time than anyone else. Plus, in some ways, Kim and Kourtney have their own language too, like when they say "bible" to make promises or call everybody "dolls." So in that sense, the girls are just like their moms.

If Khloé is ever too busy and those kids need a back-up babysitter, let me know. Hanging out with them seems like it'd be incredibly amusing and adorable.

Image: Kim Kardashian/Instagram