John Goodman's character (i.e. the Vice Dean of Air Conditioning Repair School) puts on a hat that says "Kelvin & the Zeros" while he mentions heading to band practice. This is likely a nod to the fact that Kelvin is a scale of temperature measurement, and 0 degrees Kelvin is absolute zero: the point at which heat ceases to exist. (0 K is about -273 C or -460 F.)
Director Dan Eckman also directed the film Mystery Team (2009), starring, co-written, and produced by Donald Glover (Troy).
The title of the episode refers to a specific sexual act which gets Subway/Rick fired from his job when his boss finds out about it.