Terry Richardson’s fete Friday night was the only Oscar weekend party we know of where a guest dropped his pants and mooned the red carpet, or where the host signed a fan’s breasts. The opening of the fashion photographer’s solo art exhibition, “Terrywood,” brought out celebs, rappers, rockers, porn stars, models, gallerists and everyone in between. James Franco showed up in a trucker hat while Lindsay Lohan worked an “Alice in Wonderland”-on-Mars look in a pale green frock with purple squiggles. Paz de la Huerta and hotelier Vikram Chatwal mugged for cameras, and Chatwal hoisted the “Boardwalk Empire” star into his arms between smooches. Guests included Pamela Anderson, Rick Rubin, Tyler the Creator (who arrived with his full skateboard posse), Johnny Knoxville, Ron Jeremy, Paris Hilton and Jeffrey Deitch.