When someone burns you, or you burn someone, some
obnoxious person
in the back would yell "APPLY COLD WATER TO BURNED AREA!" Because
naturally, you or the other person just got burned... See roast or roasted . It's basically just a stupid little statement to say to someone who just got burned by another person.
Kate: Luna that song is so old why do you listen to it!?
Luna:
You're mom is old, but you still listen to her.
Someone from the background who just so
happened to have
overheard: (To Kate) Apply cold water to burned area.