lmno dang
Means essentially the same thing as oh dang, but it is infused with additional win and excellent. It is, by most authorities, considered far superior to its predecessor.
Fool 1: Your mother is so obese that she generates a gravitational field which modifies the orbit of satellites in deep orbit.
Fool 2: LMNO DANG!
Fool 2: LMNO DANG!