"Pulling fast one on" is a term used to describe a situation where someone deceives or cheats another person. There are many synonyms for this phrase, including "trickery," "deception," "duplication," "double-crossing," and "hoodwinking." Other phrases that can be used to express the same idea are "conning," "bamboozling," "deceiving," "swindling," and "scheming." It is important to be aware of these synonyms in order to be able to accurately describe the actions of a person who is attempting to deceive or cheat another. By using these synonyms, we can better understand the complexity of the situation and identify the methods used to deceive.