John Stamos John Stamos

Apparently these Full House fans forgot the words to the show's theme song because they clearly weren't looking when they visited the show's iconic San Francisco house.

Full House cast sings theme song for Jeff Franklin's birthday

John Stamos was recently at the house that was used to film the façade and the other visitors failed to realized the star of the hair was standing right there. Stamos posted a shot of himself on Instagram.

Boy, these youngsters have 0.0 idea what they're missing. #Fullhousehouse. #TURNAROUND.

A photo posted by John Stamos (@johnstamos) on

Have mercy! Can you believe these fans didn't realize he was there?

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