shitting chords

When your poop comes out in three pieces - all slightly increasing sizes, with the quantify representing the three ascending frequencies of a musical chord.

Alternate definition - when making a loud poop, your farts are so fast and furious they overlap three times to produce a musical chord.

I had some funky tacos yesterday and this morning I was shitting chords.
Or
"An event for the offspring of mixed-race families shits a chord as the difficult to 'identify' people" - Toronto Star - January 3, 2017