An opportunity to sneak off from the crowd to go take a monster dump. (Dumportunist, noun)
Before arriving to the party, Bojangles devoured a 5 piece fried chicken bucket and cornbread among various other soulfood dishes. As the party shifted outside, a dumportunity shined upon his churning bowels. Bojangles was an infamous dumportunist, with a brand so pungent, suffocating, and foul.