Serious answer: eggs have a protective barrier around them, so sperm actually need to group in bunches to break the barrier, and a single lone sperm is incredibly unlikely to do well on its own. As such the ones that have a higher chance of success are actually the ones that are last and get in after the barrier’s been weakened.

My highschool chem teacher’s first words were. “Ice breakers are so boring, let’s go blow stuff up!” And then imediately showed us what happened when you drop a cube of pure sodium on water.

Best fucking class I ever had.