Kind of intentionally obtuse since they used eₑ as a variable and eₑₑ as another variable, and used (e-e) as an exponent a few times, which is basically the equivalent of multiplying by 1 in a fancy way. The first and last term also perfectly cancel out.

The same integral written in a saner form is:

integral from -e^e to e^e of (integral from -e^e to e^e of e^-(x^2+y^2)dy)dx

This is a fantastic metaphor for what tinnitus feels like.

Is nobody going to complain this is a screenshot of a Tumblr post of a Reddit post

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Gonna need the code to decipher that one 🤣