You die liao can still steam?
It's a natural reflex which happens quite often in corpses.
https://www.bustle.com/p/7-creepy-things-a-dead-body-can-do-according-to-science-13550864
7 Erections Can Occur
Fer Gregory/Shutterstock
Depending on the position a person is in when they die, it's possible for the body to get an erection after death. This is due to the pooling of blood, which is no longer being circulated through the body, Rappaport says.
But rigor mortis can also play a role. "Once rigor mortis sets it and the body muscles begin to stiffen, occasionally, [the penis] may
stiffen and become erect," Rappaport says. "It may also ejaculate as well."
It's weird and creepy and kind of horrifying to think about what the body can do after death, but keep in mind it's all a natural part of the process.