"Say it Isn't Sew" is the 3rd episode of season 5 of Foster's Home for Imaginary Friends. In this episode, everyone at Foster's is off to the fair. Mac and Bloo decide to have a vomiting contest to see who will vomit last on the "Vomit Comet" (but Bloo assumes that he who vomits first wins). After learning that Madame Foster is also going to the fair, Bloo ditches Mac and rides in Madame Foster's Firebird. However, the latter decides to make a "quick" stop at a fabric store across the street from the fair, much to Bloo's horror.