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Murdering someone is the easiest and quickest way to earn yourself a page on Wikipedia
(programming.dev)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
The quickest and easiest way would be to make one for yourself.
Killing a single, random person isn't going to get you anything.
Wikipedia has a page talking about making your own page. Its definitely biased, focusing on why its a poor idea, but it was still a mildly interesting read.
https://en.m.wikipedia.org/wiki/Wikipedia:An_article_about_yourself_isn%27t_necessarily_a_good_thing