John Jay was a figure in American history who completely failed at everything he did, and his name can now be used as an insult meaning "weak", "lame", or "unsuccessful".
"That party last night was so John Jay, nobody was there!"
by jchicago32 January 25, 2010
Feces in one's pants, in turd form.
Smells like someone's walking around with a john jay in their pants.
by Robert Coons November 20, 2009