Chad Smith "became" Will Ferrell again - and viewers were confused.

Red Hot Chili Peppers drummer Chad Smith appeared on the opening night of the new Saturday Night Live dressed as actor Will Ferrell. The musician imitated the comedian's appearance and facial expressions so perfectly that viewers in the studio and on social media weren't immediately sure who was actually in the frame. In a humorous performance, Ferrell claimed that Smith allegedly "stole his face," and that the actor himself was "knocked out backstage" and replaced with a double. A long-running joke about the striking resemblance between the musician and the comedian has once again gone viral, and videos of their appearances are already circulating widely on social media.