Dick'sack is a contraction of dick(penis) and ballsack/nutsack(scrotum/testes)
Used to describe the entire region in which male genitalia is anatomically located; term to describe the anatomical location of both the penis and the scrotum/testes
If a friend says, "Hey guys, the gravitational pull from my gaping vagina is causing me to be unable to gather the fortitude of mind to order a pizza this day", one may respond , "Order the fucking pizza you nutless sack of dick".