Joke components/circuits

[kpatz]

I know electronic geeks can have a great sense of humor, so there's a thread to show it off.

Post your favorite joke components/circuits/concepts here. That is, things that don't (normally) exist but are funny to think/talk about.

For example: a dark-emitting diode, or for those who have trouble with polarity markings, a bidirectional diode.

 

[KrisBlueNZ]

Well we might as well get the obligatory xkcd "circuit diagram" picture in here.

From https://xkcd.com/730/