Can any Vandy baseball fans tell me..

or elaborate on, what are your bench guys doing when it's the start of your half inning in the field?
At Friday's game against UGA, they ran into left field, and it looked like they were doing some sort of psuedo-stretch/comedy routine. I was wondering if this was some sort of thing they started at home to treat the fans, or what the purpose is besides stirring up boos from the opposing crowd?