I swear, gullible is not there.

Some one wrote gullible on that tree over there.

Gullible Person 1: Did you know that 'gullible' isn't in the dictionary?
Gullible Person 2: Really? (Checks dictionary)
Gullible Person 2: Wow! It really isn't in the dictionary!
Gullible Person 1: Oh my God! Give me a look!

Look! Gullible's written on the celing!

Person2: Say gullible really slowly, it sounds like chicken

Person1: guh-lih-bull

Person2: hear it?

Person1: no.. guh-lih-bull

Person2: hahaha

"Gullible like a member of the church"

Gullible isn't in the dictionary!