A term referring to when an individual sucks on another male individual's scrotal sack (i.e.: balls, nuts, two pieces, hanging dice, etc) and the sucking sound makes a grunting noise as the person pulls their mouth off the sack.
Corey, who loves females, was getting his balls licked and heard an all too familiar sound. He said "ooh, I love the grunting scrotus"
by Don "grunting scrotus" May 26, 2009