The perfect loop is one of the most endlessly satisfying sights on planet Earth.
Don't believe us? Just take a look at this brave man inhaling an unlimited amount of pancakes, for example:
Not good enough for you? How about this brain-mashing Lego block?
No? Oh, right, erm... how about... this otter? Slip'n'slidin' its way into the frosty abyss?
Still not impressed? Well to be fair, they all pale in comparison with Emily Ratajkowski's latest Instagram, which might just be the most hypnotic video on the internet.
Alright fine, it's not exactly a perfect loop - but it beats the pancake guy, in any case.
Ratajkowski's been having a busy few weeks on her Instagram. Just the other day she got in a wrangle with her denim jacket, and before that posted a couple of snaps from her upcoming movie Welcome Home.