Overcast weather and fleeting sprinkles didn’t deter many from coming to Douglass Park for Riot Fest this weekend, including for headliners Weezer on Saturday and Green Day on Sunday — along with the one person nearly everyone wanted to see, actor and musician John Stamos, as well as the rebellious, anti-establishment spirit at the heart of the festival.

Much of the day Saturday belonged to Riot Fest’s deepest lore and its most persistent campaign finally coming to fruition: John Stamos taking the stage 12 years after the festival first invited his fictitious band Jesse and The Rippers from the sitcom “Full House” to play. Saturday was unofficially-officially Stamos Day, also marked by the return of the Butter Stamos bust, a new standing statue and a look-alike contest.

“It’s great to be

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