These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
"Grandad's Little Ditty" from Sailing the Seas of Cheese.
Ear Worm: Jerry was a race car driver, he drove so goddamn fast...
Epic Riff: Most famously, "Jerry Was a Race Car Driver" and "My Name is Mud." But also "Tommy the Cat", "Groundhog Day", "Hamburger Train", "Electric Uncle Sam" and "Lacquer Head." Most of them tend to be on the bass.