Kyle has extremely strong beliefs, and when forced to question them, he becomes very upset and has somewhat of a short temper (especially when it comes to Cartman. This has caused a lot of fights between the two boys). For the most part, Kyle bases his decisions on both his emotions and beliefs; therefore, he is easily coaxed into fights or gives into his feelings, an example of this being when Cartman sang a song about his mother being a "bitch" and got everyone to join in, which annoyed Kyle.