Mnemonics is just an easy way to remember the order of something. Ex.) The layers of the atmosphere would be (Thermosphere, Stratosphere, Mesosphere, Troposphere, Exosphere) The Straight Man's Testicles Exploded.
A lot of these T.V. Funhouse episodes seem to have two versions. This show has a full version and it also has a version with "Lost Cartoon Flashback: The Black Sabbath Show, with Doom Doom the dog." cut out of it. This results in a show only 16 minutes long.
This was probably done to fit in more commercials during re-runs.