I remember when I was young hearing the older folk discussing bowel movements. Whoa...Myrtle, I poo'ed an elephant this morning...what a relief.
Oh yea...every once in a while constipation will set in...then baaloowee...a toilet choker emerges. Afterwards a bout of relaxation sets in that sets you free.
That's what PTR is...Post Turd Relaxation...that feeling you get after you plow an elephant out yer butt!
A new medical term by your's truly.