This just in: there are at least two very similar real world recordings like this:
ponies, in their rustled braids, felicitate and pontificate from their lax plinths and trickle dross vinegar hyphens from the uneasy wheeze of pestilent offal. hinder! hinder! hinder the cracking of poppyseed cakes, lush with lemon, filleted with creme fraiche and currants! i bend the tines of the oncoming wheelbarrow, splashing the guano, the anthrax smoothie. this one is the one to pull!