The term "ballsack" is considered informal and somewhat crude, often used in a humorous or derogatory context. While it may not be as offensive as some swear words, it can still be deemed inappropriate in certain settings, particularly formal or professional environments. Its acceptability largely depends on the audience and context in which it is used.
ballsack
Ball sack IS a slang term. See the related question for the whole list.
It means...SUCK MY BALLSACK
Ballsack Bill lived on a hill
ballsack ballsack
no
ballsack
ballsack
ballsack
ballsack on my head
ballsack
ballsack