A Dutch Tuxedo is a self induced condition in which you have farted in a coat, jump suit, snow suit, etc you are currently wearing. Your fart gets trapped and has only one place to escape: the neck opening. The fart is released directly into your own face.
You: Dude i just ripped one and it shot out the neck hole of my coat directly in my face!! Sick!!
Me: Nice Dutch Tuxedo you got there!!