Signed.
I had a psych professor who used to take actual bribes. His favorites were gift cards from Best Buy, pornography, or liquor. My friend and I presented him with all three.
We did absolutely nothing throughout the class. Neither did anyone else. He would sit in front of the chalkboard and basically have a conversation with himself for a couple of hours. He was really into transgendered people as well, and requested that my friend and I go to this nightclub and take photos and interview a headline act with a transvestite. We had to skip class to do this, of course. It was awesome.