The Principia Discordia doesn’t indicate what to do, but do something that promotes Discord, or maybe Disco.
Dress as you would to go to a disco sometime in the 1950s through 1970s, imagine you’re the Disco King or Queen (or both), then begin dancing to the music in your head. Pretend the discotheque is at your local market, a playground, or in front of a house of worship. Leave before the police arrive. If one shows up before you depart, tell the officer, “Love the threads. Wanna boogie?” If the officer declines the invitation, apologize profusely for your mistake and claim you forgot to take your medication.
Better yet, forget the whole thing.