“imagine what it would feel like to be a sperm”

Soooo ... the experience of a sperm during an ejaculation must be like accelerating to 'warp speed' up the urethra and, conditions being right, accelerating as you jet off through space. Followed by a sudden stop.

There is a PhD in figuring out how to fit tiny microphones to individual sperm so you can catch them go 'Wooow, what a ride'.