1; Jefferson isn't much of a prankster in his day to day life, but when you're stuck with the same guys day in and day out, things can get a little stale and sometimes the mood can be a little iffy, especially in the throes of a losing streak. In order to lighten up the mood, Jeff likes to go with some of the classic pranks -- ketchup packets under the toilet seat, saran wrap over the toilet bowl, rigging the toilet to spray rather than flush, you know, classic toilet pranks. He's gotten a lot of warnings from the janitorial staff who are pretty sure he is to blame, but they've never really caught him in the act so it's all circumstantial evidence at best. To get back at them, he filled their office with hundreds of live frogs. If you don't see how that's a prank, well, take a moment and really think about it. The best works of art are subtle.