If it’s unclear, it’s referencing an infamous Far Side cartoon called Cow Tools. Here’s some background:

It even has its own Wikipedia page: https://en.wikipedia.org/wiki/Cow_tools

when you try to build IKEA with 40.5° C* fever.

*(around 105° Frankenstein)

Bruuuh imagine trying to mock swedish writing and the two non english characters you use are not even in the swedish alphabet. I get it but its still funny how people always think swedish has ø