The worst shit I had was recently and it took 3 hours.
I woke up in the middle of the night with terrible stomach aches.
First it was hard chunks, then a massive turd, then it went soft, hard again and finally it went 'let it gooooooo'.
I had never seen such a big load of shit in my life and it hurt like hell pushing it all out.
Once I heard the church bells ringing I knew about 3 hours had passed.
Remember to drink enough fellas
