This is the place to share all things related to painting.
Have you ever heard of “Uber-Slippery” paint? Have to admit that I have not until this article in American Painting Contractor Magazine. " It’s designed – or at least marketed – to deter people from climbing your walls. In what could be called “unimaginably gloss,” this paint can remain wet (and slippery) for up to three years. “While the paint looks dry, it’s not — it’s quite sticky and hard to remove”.
Guessing this is more of a commercial use product, but good to be aware of the creative options out there.