Testicle Swirly
After flushing the toilet when one sits down too soon to pinch off another loaf the water is still rising and hence, yes the dreaded "Testicle Swirly". Happened to me two nights ago.
Oh damn, Ralph, I flushed the toilet to empty any remaining morning remnants but had to go so bad that I sat down too fast and got a half bag full of a Testicle Swirly. I guess it is better than a headfirst swirly.