There was a line at the bank when the man whose turn had come pulled a gun and demanded money from the teller.

The teller gave him money and he turned to the people behind him in line and asked, "did you see what I did?"

The first person behind him said, "yea I saw what you did."
The robber promptly shot him in the head and then turned to the next person in line and asked, "did you see what I did?"

The response was "yes I saw what you did"
The robber promplty shot him in the head too.

Turning to the third person in line the robber asked
"did you see what I did?"

The third one said "nope, I saw nothing... but my wife did."

lol