What if you actually never stopped laughing? 5 minutes, you feel amazing. Your brain is flooded with endorphins and dopamine.
Your heart rate is up and you've just had the best abs workout of your life. 1 hour, the fun is over. Your facial muscles are cramping and your throat is raw from constant gasping.
Your brain starts to panic as it loses control over your vocal cords. 3 hours, you're struggling to breathe because your lungs can't fully inhale between spasms. Your oxygen levels drop and you start to feel lightaded and dizzy.
5 hours, your brain is totally glitched. It can't tell the difference between joy and straight up agony anymore. The shaking gets so violent, it's now strong enough to actually snap your ribs like twigs.
You're still laughing, but your eyes are literally begging for it to stop. Team hours, your brain is totally fried, but your body just won't let you stop. Hallucinations kick in.
You look over and the shadows on your couch are straight up laughing along with you. 23 hours, your body hits its limit. Your blood pressure drops.