A lot of men wonder what gets a girl's engine revved, you know, that way. Well here's a little known fact: it's pretty much the same as what gets a guy excited. You know what gets us and them excited? Motorcycles. I don't know if it's the burnished metal, the smell of hot grease, or the heat of the motor, but girls love bikes. If you want proof, just check out the frequency of sexy girls stripping down to their bikinis for a little ride on the most badass motor vehicles known to American highways. Here we present Exhibit A: the Sexy Bikini Girls Ride Motorcycles Gallery.