Actual demotivator: [link]
This comes from Medaka Box #6. In it, the student council challenges a bunch of clubs to a contest. The winner gets an addition to their budget. Since it's held in a pool, it naturally means swimwear for everyone. (except the lolli announcers, thankfully.) However, it does have a lot of sexy guys and hot babes in swimwear. So if you like either kind, you're covered here.
That's Zenkichi Hitoyoshi on the left and Medaka Kurokami on the right.
Medaka Box anime copyright studio GAINAX.