fluff

any light downy material

something of little value or significance

a blunder (especially an actor's forgetting the lines)

make a mess of, destroy or ruin; "I botched the dinner and we had to eat out"; "the pianist screwed up the difficult passage in the second movement"

erect or fluff up; "the bird ruffled its feathers"

ruffle (one's hair) by combing the ends towards the scalp, for a full effect