A person who believes everything he or she hears or is so out of place that they are easily targeted by people that mean harm or fair game for bullies.
That person is so easily fooled everyone can tell that they are a mark.
A mark parish is a drink similar to an Arnold Palmer, instead of lemon aid you use Red Bull to mix with ice tea, he is a known poet/ celebrity from Berkley MA. A Mark Parish is a drink known throughout the south coast of Massachusetts and is absolutely disgusting