the.com/jay

means A naive or foolish person, easily tricked — originally slang for a gullible rube or simpleton.

from Comes from the bird name 'jay' (the chattering, showy corvid), which by the 1500s had already become English slang for a flashy, foolish, or gullible person — the logic being that jays were loud, conspicuous birds, all noise and no sense. That bird-based insult is also the root of 'jaywalker,' originally a mocking term for a rural rube who wandered obliviously into city street traffic, like a dumb bird that doesn't know better.