
Continuity mistake: Just as they start to sing "What Time Is It" the top of Troy's boxers are visible above his belt. He starts out wearing light colored boxers, which change to dark, then light, and again to dark colored boxers during this song. (00:02:05)
Answer: It is just a coincidence. Corbin's character is all about sports and feels that Ryan is not in the same league when it comes to baseball (pardon the pun). Ryan, on the other hand, wants to prove that dancing takes just as much athleticism and dedication as sports therefore the game and song are a showdown between two cliques you generally find in high school, the athletes and the drama club.