The word to flollop (flolloped, flolloping) is generally attributed to Douglas Adams - Restaurant at the End of the Universe (1980). However, it can be traced further back to the BBC comedy “The Good Life” - episode “Away From It All” (April 10, 1977). The series was written by Bob Larbey and John Esmonde. The word there has the same general meaning - a cross between floppy and lolloping. Babara reclining on a couch says she can’t move she feels too flollopy.