Terrell Owens
The reason that Terrell Owens also known as T.O. is my least favorite celebrity is because he shows off to much and in a bad way. That though is not all that bad, but the other things he does is some of the reasons I don't like him.
One reason is because he shows off more than he should considering he doesn't catch half the balls that come to him. Another is because one time when they played the Falcons he spit in DeAngelo Hall's face. Those are some the reasons that make me not like him that much anymore.