"Shoot" can be about taking a photo, or cause harm to someone, in this case, your wife.
"Frame" a picture or a photo, or blame an innocent person for a wrong done.
"Hang": Well, this is simply to put it on a hook and nail it to the wall or ceiling, but it could also refer to someone committing suicide by tying a rope round his (in this case, "her") neck and fastening the other end of the rope to the ceiling.
This sign outside a photo studio is a really clever play of words. Creativity at its best!
Have fun with words!
