One of the traditions amongst the USC marching band is to go to the Notre Dame game naked under their uniforms.  Notre Dame is located in Ohio and most of the time it’s about 40 degrees outside during the game.  The marching band does not get cold however because the body heat from everyone around them keeps them warm.

A friend in band told me this tradition.  It is a secret tradition so he is technically not supposed to tell it as he claims the uniforms are considered a valuable item and this tradition is degrading to them

This tradition seems to be making commentary on the lines of decency.  The participants in this tradition are technically within the realm of what would be considered acceptable in terms of exposing themselves but they are still playing with the confines of this rule while also making a statement in regards to disgracing a shared enemy, the Notre Dame team.