Regular Poop to Mushy Poop to The Liquid Sh*ts

This title really does say it all. Why does that happen? I want an actual medical explanation as to why, rolling into my 10-12 minute time on the toilet my BM has gone from solid and respectable- impressive even, to mushy and not fun to wipe up after, to liquid (first just falling, then more power driven.. let’s say “rocket-like” or “explosive”). I’d really like to know why this happens? Is it the cheese ravioli from last night- or the fact that I stole them from my friend’s fridge (I really did) and I’m being punished for stealing…?
I’m still pooping. It’s been 15 minutes. And it smells in here.