A robber enters a bank, he pulls out a gun, and he shouts:

 

The man, no longer showing the slightest hint of amusement, says: “Look, there is a first time to everything, but this is unbelievable. Do you really have any idea of what you are doing?”.

“that is it!” the robber snaps. “I have a gun, you are unarmed, everybody else is scared to death, and there are zero guards in here! Don’t you understand the situation? I completely got this under control!”.

At this point, the man puts down his newspaper with an honest, concerned look on his face. He looks the robber in the eye and says: “Dude, this is a blood bank