An element that exists often because it seems too unlikely, bizarre, existed in Real Life but is assumed to be fictional by audiences kitschy to be real.
If you are a Guitarist, you know a lot about certain topics related to Guitar,.
note ; And of course, any food or drink that can easily be spilled onto a shirt. Specific type of Visual Innuendo; in some carefully crafted situations may end up being the visual equivalent of Innocent Innuendo.
A common subversion is biting down hard at the end.