I painted the entire underside of a car one time with a product called "Trailer Coat." It is a urethane based primer that is designed to be painted onto boat trailers. It is also packaged as "Underwater Metal Primer" and goes on propeller shafts and rudders...............it is very tough stuff.

I worked in only shorts, no shirt, and the stuff was dripping and splashing all over me. When I got done I tried laquer thinner to get it off........nothing. Then I tried acetone.........still not coming off. I tried every solvent in the shop and it didn't make a dent in getting it off. For three weeks I wore this stuff all over the top of my head, my face, my arms, etc. Everybody at work was laughing at me everytime they looked at me.

Oh, after I got done I read the instructions on the can, they read "Do not get this product on your skin or it will take 3 weeks to wear off!"

Don