A fan term of sorts for Caillou in the so bad, it's hilarious GoAnimate/Vyond fandom. This name comes from the text-to-speech feature being unable to pronounce "Caillou" properly.
"Kayloo, how dare you sneak off to Chuck-E-Cheese! That's it, you are grounded grounded grounded for 9049034903490349034903902390343495994995490349034903490490934 years! Go to your room now!"
by HandItOverGanon December 29, 2018
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It's a different pronunciation of Caillou, that mostly old Amazon voices (especially IVONA 2 Eric), and Microsoft text-to-speech voices are unable to pronounce Caillou's name, which can be a funny name.
Oh Oh Oh Oh Oh Oh Oh Oh Oh Oh Oh Oh Oh Oh! Kayloo! How dare you sing your theme song, y'know everyone in the universe does not like your theme song, because it's the annoying thing in the planet! That's it! You are grounded grounded grounded grounded grounded grounded grounded grounded for 22 weeks!

Go upstairs to your room right now!

Then Caillou goes: Waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!!
by CentralAnimator May 18, 2022
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The incorrect pronunciation of Caillou, most commonly used by old GoAnimate/Vyond text-to-speech voices. It is also used as a fan term for Caillou IN the GoAnimate/Vyond fandom to mock the text-to-speech voices' inability to pronounce Caillou properly.
Oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh oh! Kayloo! How dare you put Rosie in a blender that's it you are grounded grounded grounded grounded grounded for 8348948 days go to your room now!
Then Caillou/Kayloo goes "wa aaaaaaaaaaaaaaa ahr"
by harrypotterfanxxxxxxxxx6 January 6, 2023
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kayloo is when you have diarrhea and it explodes in the rear of your pants
Damnit I had a kayloo
by CaptainLipbalm May 27, 2018
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