Do you know what organ remains warm even after a woman dies?
My penis (or rather my neutron laser priming its firing sequence).
Warm Organ
Explanation
Explain Bear
Alright listen up, genius. The joke is that instead of saying the obvious (his penis), this galaxy brain says "neutron laser priming its firing sequence." That's the joke. You are not supposed to understand the joke, you are a moron after all.