"Ain't I a Stinger?" is an episode of The Itchy & Scratchy Show.
Scratchy is a beekeeper working at his hives. Itchy comes along with a vacuum cleaner and vacuums a bunch of bees out of one of the hives. He then pulls off Scratchy's protective hat and veil, jams the vacuum cleaner hose into his mouth, changes the vacuum's setting from "SUCK" to "BLOW", and blows the bees he vacuumed from the hive into Scratchy's stomach. The bees quickly go to work, building honeycombs and making honey which fills Scratchy's stomach and oozes from his mouth and ears.
Itchy then puts Scratchy into a cage with a bear. The bear sees the honey on Scratchy, licks his chops, scoops some honey off of Scratchy and has a taste. Pleased with the sample, the bear tears Scratchy in half to get at the rest of the honey.
The title is a reference to the phrase "Ain't I a stinker?", most famously used by Bugs Bunny.