A couch on which one person dwells on for more than a day, often it becomes riddles with their scent. The person will often sleep/hang out/eat/play xbox/beat on the couch before his stay is complete. The duppa's inhabitant will often sleep through class while on the duppa.
"Get Maxx off that goddamn duppa. He's been there this whole week sleeping. He never leaves that thing."
A fat blunt and when i say fat i mean a fat ass blunt
i was walking dwn the street smoking a Duppa when i saw a cougar walk by