The term 'Brain Freeze Cause, Maybe' can be solved by the four-letter word 'ICEE'. ICEE is a brand of frozen carbonated beverage that is popular in the United States. It is known to cause brain freeze due to its cold temperature. Brain freeze is a common phenomenon that occurs when a person consumes something cold too quickly. It is caused by the rapid cooling of the roof of the mouth and the back of the throat, which triggers a reflex reaction that causes a headache.