Gully

Someone who is gullible.
Someone who is dumb enough to believe everything they hear.

P1 - "I swear Jimmy is so gully."
P2 - "Haha, I swear. I asked him to borrow $50 and told him I'd pay him back."
P1 - "Well.. and."
P2 - "Girl he ain't ever gon' get that shit back. That was 6 months ago."