My money is on the tailless sperm!
Testing Which Basic 3D Shapes Are The Most Aerodynamic

Because some people refuse to go to sleep at night without having their nagging questions answered (do storks bring the babies or not?!), this is is a video of Youtuber Cal Pal testing which basic 3D shapes are the most aerodynamic using physics vehicle simulator BeamNG.drive. He tops ten go-karts with identically weighted 3D shapes and runs several tests: a gravity powered downhill race, an engine powered drag race, a test to see which is least affected by heavy wind, and finally, a 3 lap go-kart race. The results may surprise you. Unless you suspected the forward and backward pyramids would consistently take first and second place, in which case, congratulations, you’ve earned an honorary physics degree from Born In Space University. Include it on resumes! You can also use me as a reference. Jake? Huge piece of sh*t. Wait, did you say Jake or Jack? Oh, Jack, great guy, salt of the earth. I’m still not sure which one you said. How did you get this number again?