"Hey, is that stuff in the tube to stop the brakes from squealing?"
Ummmmmm...Pina Colada flavored anti-squeal (or pinepple, whatever that flavor is) ha.Then it dawns on me and I ask him if the tube was in a bag with a business card. "Yeah, that's it". No, sorry, that is not anti-squeal, that is lip balm, please don't use it on the brake pads.
Maybe I'd give them "zipper lube" ....but brake anti-squeal.... sense of humor is helpful.