wouldn't wish something on my, etc. worst enemy
I wouldn't wish (something) on my worst enemy
The thing being discussed is so bad that no one deserves to be subjected to it, not even a person I hate. I wouldn't wish cancer on my worst enemy. No one should have to go through that. That's the worst class I've ever taken. I wouldn't wish that professor on my worst enemy. Buffering videos are truly the worst. I wouldn't wish them on my worst enemy.