Requesting a prospective customer eat pork would be a clear violation of his/her Constitutional rights. You should be ashamed of yourself for even thinking such a thing!
OTOH, hog lard is an excellent lubricant, rust preventative and finish protector. One wipes on a liberal coating then wipes off the excess. Unlike inferior gun products, hog lard penetrates the finish of metal and wood. It can't ever be entirely removed.