Johns Gravy

When you go to the John with a case of the wet shits and the toilet water looks like your Aunt Gina's gravy

Travis: Hey man, you said you stomach hurt earlier. Are you doing any better?
Mohsin: Yeah, I made a big pot of Johns Gravy before I left

tranny scanner

Much like Gaydar, tranny scanner is a trans persons ability to detect other trans people
A cis persons ability to detect trans people is more referred to as Transgendar

Everett - "do you think that Devon is trans?"
Avery - "No doubt, my tranny scanner went off just like before Elliot Page came out"