A North Idaho is when you head north until you find a prostitute, ask her to give you a blow job, convince her to do it before she pays you and then cum in her eye and shout "North Idaho!" and run off without paying.
Fool: "Dude, run!!!"
Dude: "Why, fool?"
Fool: "I just North Idaho'd this bitch and her pimp is coming to get me!"
Cow feices from North Idaho is exteremly smelly and large, much larger and smelly than any cow manure you're used to.
That guy is a liar, he's full of North Idaho BULLSHIT!
Any outfit, or articles of clothing, that are currently free of blood stains
"I saw John at the gas station earlier today, he looked great. Had a North Idaho tuxedo on"