When the students nominate people for class president, Jerry is shown wearing a red bowtie. However, he does not receive the bowtie until several scenes later, when he is disguised as an ice cream man.
At one point during the movie, as Henry is recounting all of the ways that Jerry (a.k.a. the Devil) has ruined his life, he mentions being left naked in the hallway by a spell Jerry cast to strip him of his clothes in front of the other students. However, Henry is never left completely naked in the hallway. When the incident happened, he was clearly left wearing his tighty-whitie underwear while the other students looked on and laughed at him.