Third-person singular simple present indicative form of duff.(verb)
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Use "duffs" in a sentence
"Did Nancy Pelosi just think everyone sat on their "duffs" for the past eight years???"
"The main distinction is that the crowdsourced are active collaborators in the commodification of their opinions, while TV viewers just get to sit on their duffs."
"To the Republicans .... get off your duffs and come up with an alternative plan."