You guys could have said
"Hey we can't provide that here, you have to buy a key"
I understand asking for keys is NOT legal and yes its unlawful to suggest pirating, but there are ways to deal with these scenrios without calling someone a "cheap SOB" Even if OP was trying to pull a funny move we should be more mature then name calling and using acronyms. I respect the rules as much as anyone else but we should remain civilized even if the other person is wrong.