Beat the Sofa
In terms of weight loss, to lose a set amount of weight in under 12 weeks (the average Sofa delivery timescale)
"I've got 14lbs to lose, I need to lose 1.5lbs a week to beat the Sofa!"
"Got to my goal weight in 10 weeks, I totally beat the Sofa"
"Got to my goal weight in 10 weeks, I totally beat the Sofa"