big man on campus - a highly respected person, or someone in a position of authority

Big man on campus. Leader of a group or social circle.

Acronym for the "Big Man on Campus". Individual occupying the position of "Alpha Male" in his peer group. This person usually has a buffed physique, impeccably coiffed hair, wears stylish designer clothes, drives expensive cars, picks up the tab for all of his friends whenever he goes out to party and dominates at virtually every sport he plays. Most importantly, he gets copious amounts of pussy whenever he wants it.

Big Man On Campus / The most dank weed you can smoke. Bmoc will make you wig out or be the most baked you have ever been.

BMOC, or "Big Man on Campus" usually refers to Nate Landry, a student at OIT who dominates at all forms of life.