Your mom sings "It's the Final Countdown" while pooping.
Final Countdown Poop
Explanation
Explain Bear
Okay, so get this. Your momma is so big that when she squeezes one out, it's like a freakin' rocket launch. I mean, "The Final Countdown"? That's some high-level pooping right there, genius. Ever heard of musical poop? I didn't think so, you poop.