The phrase "pulls fast one" means to deceive or trick someone in a sly or dishonest way. Antonyms for this phrase could include being truthful, honest, straightforward, sincere, and genuine. When someone acts with transparency and communicates openly, it is less likely for them to pull a fast one on others. Additionally, integrity, honor, and forthrightness are all antonyms for someone who would engage in deceptive behavior. By building a reputation for being truthful and trustworthy, individuals can avoid the temptation of pulling a fast one and build stronger relationships with those around them.