The heroic and brave act of cracking open a bubbly while you lie on your back as someone performs sexual acts to you. It is an extreme display of profound laziness.
The act of brutally penetrating a person's anus with immense speed leaving behind a sandy texture and a dustyhaze. Duning originates from Mongolia and anything except Jigglypuff can be duned.
"If these filthy casuals keep talking shit, someone's in for a rough duning session"