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xkcd #3199: Early Arthropods
(imgs.xkcd.com)
Title text:
'Ugh, I'm never going to be like spiders. My descendants will all just be normal arthropods who mind their own busines and don't do anything weird.' --The ancestor of a bunch of eusocial insects
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3199/
Little did arthropods 1 and 3 know that ultimately, they'd just do like 2
Everything evolves into a crab.