And I grew my second mustache for the same reason all your weird dads grew theirs: it is an evolutionary signal that says, “I’m all done.” A mustache sends a visual message to the mating population of Earth that says, “No thank you. I have procreated. My DNA is out in the world, and so I no longer deserve physical affection. Instead, it is time for me to turn away from sex and toward new pursuits, the classic weird dad hobbies such as puns, learning trivia about bridges and wars, and dreaming about societal collapse and global apocalypse.”
