(urine and excrement humor) : sexually dark, perverted, macabre, sadistic and altogether inappropriate humor (also potentially includes misogynistic jokes), the type found in the 50 shades of Grey trilogy.
some of the definitions here on urbandictionary.com are, IMHO, since they were written by idiotagers obsessed with sex, drugs and rock-n-roll, are a perfect epitome of urncrement humor.
by Sexydimma June 18, 2013