Boards
I wish my Psychology lectures had been this fun
http://www.bbc.co.uk/news/world-us-canada-12642898
ALSO
THAT ISN'T A SEX TOY, THAT'S A DRILL (at 1 min 30sec on vid. probably safe for work?)
We did have a lecture once where my lecturer discussed men ejaculating more in MMF scenarios over MFF or MF, due to sperm competition...but that's a different thread.