Actually, it is possible that some of them experienced the death of their brain before reproducing: https://www.sciencedirect.com/science/article/abs/pii/S00904...

And, FWIW, Jesus with an after-death erection was popular enough a motive to officially get banned by the church: https://en.wikipedia.org/wiki/Ostentatio_genitalium

https://en.wikipedia.org/wiki/Death_erection#cite_ref-Steinb...