Wait to see who is defecating EVERYWHERE because if they just snorted a QP of epsom salts they're going to be having a horrible, horrible time. Epsom salts act as a laxative in high doses. Realistically though, exploding dye packs are your only man for the job. There are DIY guides online but be prepared for EVERYTHING that the dye touches to be permanently stained. If you use the right kind of dye it will stick to the person's skin for a number of days - how long can the person you think it is avoid you for? Libertas