(Writing prompt suggested by floralflowerpower) Sam discovers the existence of 'ghost nip', cat nip for ghosts. When she sees how the stuff makes Danny a bit woozy, she comes up with the idea to make a tea out of it. She keeps vials of it in the first aid kit to help Danny as a pain reliever after bad fights. She just thought the tea would relax him, not make him act like THIS!

Danny get's knocked out in a ghost fight and reverts back to human. The last thing he hears before loosing consciousness is his parents announcing that they're on the scene. When he wakes up, they're acting strange. Now Danny's going mad trying to figure out whether or not they arrived just in time to see him change, or moments afterwards. (Is it a reveal fic? Read and find out!)