Toots may be the most reliably funny substance in the entire universe. It's no surprise then that the whoopee cushion, as a provider of farts (even if they're fake), is an absolute classic. Put it under the couch cushion. Wait a bit. Laugh outrageously at your victim's silly, surprised look.
7.25 inches long
Warning - Choking hazard - small parts - not for children under 3