these are produced after a male beaing has had a hernia in the scrotal region. the muscles contract creating an odd pointed shape with two bright red dots on each testicle. the main difference between these and scrotum tits are that in the case of sack-lumpos, milk does not seap out o fthe scrotal pores.
"Yo! shit! i got some fuckin sack-lumpos, dog!"
"My bitch won't fuck me, because my sack-lumpos is nasty, b"
"My sack-lumpos is itchy, dog"
"When i rub my sack-lumpo nipples, my weanie smells like mayonaise"