It was there, LOL!
From Merriam-Webster:
“...easily fooled or cheated; especially : quick to believe something that is not true...”
Learned something, too!
“.... The verb “gull” was borrowed into English from Anglo-French in the mid-16th century. Another relative is the noun “gull,” referring to a person who is easy to cheat - no relation to the familiar word for a sea bird, which is of Celtic origin....”
Apply to real life:
Salamander knows a gull is born every minute.
He gulled.
I am a gullible gull.
Finally, somebody lets me play my silly joke on them!
Thanks, PTBOR.
;D