Surpass
While riding on your scooter, you grow a mustache on top of the mustache you already have in order to surpass the people around you. You're in a scooter race and your mustache is the only thing keeping you in the lead, but someone else has a mustache too! So you grow another mustache to surpass them once again!
Picture yourself running on a scooter with a bunch of other people and closing your eyes tight, willing another mustache to sprout out of your face to surpass them all.
か
す, あやま
None
Suddenly, something else manages to surpass you all. It's a car (か)! A car with two mustaches is also riding on a scooter and going way faster than you.
Watch helplessly as the car surpasses every single one of your scooters. Both of your mustaches droop in shame.