Here is part of the script for tonight's episode. My dad works at 音乐电视 studios and he's an editor so he got me a copy of the script so here it goes.
Ext. Kids' 足球 PRACTICE FIELD -- DAY
A bunch of boys are on the field doing jumping jacks (or some other exercise we can actually animate our boys doing)
Boys 21! 22! 23! 24! 25! (keep going to go under the rest)
Reverse to 显示 that Cartman is sitting on a little chair in his 足球 outfit sipping a water. Behind him we can see some parents in the bleachers. The coach is standing 下一个 to Cartman, watching practice, and there's 足球 practice equipment...