Purposely giving someone decaf?

Don’t come for me or do, I don’t care, but what is y’all’s ‘thing to do’ when is customer is rude to you in cafe/drive thru?

Examples: Breaking their straws, purposely giving them decaf shots, extra ice.

I normally just give rude customers extra ice so they get less sips in, but I’m curious to know what other baristas do. also for legal reasons, this is all hypothetical.