Boiling sperm would immediately kill it. Sperm is very sensitive to temperature changes, and even a slight increase can significantly affect its viability. Boiling water reaches a temperature of 100 degrees Celsius (212 degrees Fahrenheit), which is far beyond the survivable range for sperm.
The heat from boiling water would denature the proteins and enzymes within the sperm, making it unable to fertilize an egg. The cell membrane would also be damaged, leading to the sperm's demise.
While boiling sperm might seem like a strange question, it highlights the importance of maintaining optimal temperatures for sperm health. For example, when freezing sperm for future use, it's crucial to follow specific protocols to ensure its viability remains preserved.