It depends on WHO.
If it is my wife, then GO AHEAD! (she supports Jacksonville Jaguars, I support Pittsburgh Steelers)
If it is my son, then GO AHEAD! (too big for him anyway)
Anybody else, I would approach that person and politely explain that it is rude to do that, and to demand that jacket back.
steal your jackiet Jacksonville Jaguars then burn it.
I would keep Steelers for my beloved husband s family fan. 
I may steal New England patroits jacket.


