Trigonometry changes a man

Chronological chart showing increasingly distorted versions of Shin-chan ending as a sine function graph

This meme humorously exaggerates the real gradual change of Crayon Shin-chan's official art style across decades. Starting with the 1992 to 2015 versions, Shin-chan's running figure gets progressively more stretched and distorted in each subsequent future decade, until the final entry for 2242 where his entire body becomes the curved shape of the trigonometric function graph y = -sin x. The joke plays on the title phrase, implying that studying or exposure to trigonometry warps the character into the sine curve shape.

This meme originates from Reddit, originally posted under the title 'Trigonometry changes a man'. It is an original edited meme that builds on the common internet discussion about how Shin-chan's character design changed slowly over the decades of the Crayon Shin-chan franchise, exaggerating this trend into an absurd math joke.