chupapi means 'suce' which is a french word for suck and muñaño can be used as another word for someones name of your choice

someone who is sexy beyond mean

Is a phrase used by tiktoker jaykindafunny.
The phrase does not translate to any language.
This is probably gibberish that he just created for a tiktok video.

Other spellings:
Chupapi monyanyo, chupapi muñanyo, chupapi munyanyo.