A barracuchi.
Woman: "Thanks, she's 34 weeks. Do you have the time " Me: "Sure, it's 972 minutes past midnight."
So women know where to stand in the kitchen.
So they know where to stop shaving.
Denim denim denim.(http://youtu.be/rdnTvgK2o5I) shamelessly stolen from tumblr
None, they go commando.