To explain that you're telling the truth (or expressing a point or feelings) by putting it "on" your city, state or country that you represent and/or live. It is directed to a loved one or friend, hince "luh" (love).
"Man I heard dat girl is a mad freak on nationluh!!"
When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.