My Daddy used to tell a joke 'bout 2 women who went to a photographer. (This pre-1954...and both the cultural group of the women and the type of photography were based on his upbringing)

Seems Lucy talked Sally into going to get a photo taken. The photographer posed them on stools, then went to this big box and ducked his head under a dark cloth.

Sally says to Lucy "Hey..what's he doin'?"
Lucy replies, "He's gonna FOCUS!"
Sally gasps..."Whut...both of us?"