: a person who is easily deceived or cheated : dupe.

Has the gall meaning?

1 : brazen boldness coupled with impudent assurance and insolence had the gall to think that he could replace her. 2a : bile especially : bile obtained from an animal and used in the arts or medicine.

Do you have the gull?

If you say that someone has the gall to do something, you are criticizing them for behaving in a rude or disrespectful way. He has the gall to accuse reporters of exploiting a tragedy for their own ends.