The BBC has a fun little quiz you can take to see if you think more like a man or a woman. Some of my answers surprised me. There's a test where you're provided a pair of eyes and four possible emotions to go with them. You have to pick the matching emotion. I got 10 out of 12 right. Ditto for the spatial reasoning where you have to choose which pictures show a rotation of the original graphic. I screwed up on the first part of the word matching portion because I didn't read the directions correctly and neglected to use commas to separate words.
The hardest part? I couldn't find my metric ruler (and you need one to measure your fingers). So, if you just have a standard ruler or tape measure in your house, here's a handy place to go to get it converted to millimeters.
Go play and see what sort of brain you're packing!