http://soundcloud.com/mariboustate/fogg-maribou-state-remix
Shoulda went with that while typing.
And they only did that because they are young, yet stupid, like the rest of us. They were probably in that little state of mind where you feel like you are having the most amount of fun in a way, such that you want to do anything that is else amusing. They continued because you did not say anything, thus, they felt comfortable to do it again without consequence.