Sometimes you won't even know you've started your period until you're already in the stall — dropped trou and all.
Imagine if your all your personal development was in one place and your coaches included the world's leading personal finance coach, the most requested women in the motivational speaking industry, the world's leading stress-relief experts, world's 1 high performance coach, and multiple billion-dollar company builders! Women who venture out alone at night or engage in the age-old practice of flirting do not deserve rape.
The resulting uncertainty of who the father is hence reduces the occurrence of attacks, given the newly incited risk of potentially harming their own offspring.
They chase men who are good kissers, instead of spending time getting to know good men.
And that's not even touching on all the gross stuff that couples do that doesn't involve swapping any bacteria, but does involve being wildly foul —like sharing toothbrushes, pooping with the door open, or picking a stray piece of broccoli out of their teeth.
In regard to the calling properties, frequency analysis is typically used in research to look at the complexity of the vocalization and to distinguish between calls, which is important in determining their function.