Joker joining the Army

Joker joining the Army:

Officer: We need you in the army.
Joker: I’ll join but on three conditions.
Officer: Ok. what are the conditions?
Joker: My first condition is that I’ll not wear the uniform because it is hot.
Officer: Ok. What is the second condition?
Joker: I’ll not do the perade and other training under the sun because it is hot. I’ll only do it under the shed or some kind of shadow cover.
Officer: Ok. What is your third condition?
Joker: And my last and most important condition is that during war times, I’ll remain on leave.