Okay, this has more sense in Spanish, but let´s try it…
For understanding: monocle, in Spanish, is monóculo.
Monolo-cú. That is to say;
1- object with a ridiculous appearance, associated to lords and other posh people.
2- in ancient Galician (made in my son, certificate of origin): cú de mono louco, translated as «the ass of a crazy monkey«.
Wild Thoughts say hi, humanies.