floppo Share definition Flag referring to a fat lazy person. One who is flabby, and sloppy at the same time. I just ate a huge bucket of chow mein, I'm just gonna lay in bed and be a floppo. floppo by Monisauresrex September 19, 2016 0 0 Get merch Get the floppo mug. Buy Now — $32.95 See more merch