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The sound you make when lightning hits a Wilson and you’re too dumb to realize it’s a Wilson. It’s like a cursed version of 'wow' but with more swearing and less sense.
Kachilson! That Wilson just got zapped by lightning and still said 'wow' like it was a normal day.
I heard a Kachilson while eating my lunch. Wilson got struck by lightning and it was the worst thing ever.
Lightning hit Wilson and it was a Kachilson. I almost dropped my fries.