The whimsical toss Indiana Jones does with a sack of gold. This can be pplied to anything, including boobs, with the infamous "boobsack" or with testicles, making the "nutsack"
Amie: Why the hell did you do that!
Tim: Boob-sacking is awesome. It's like Gold-sacking but with boobs.
Hacky sacking - the male version of scissoring. The erotic act when two males press their man parts, specifically their scrotums, together and rub vigorously.
How was the bachelor party ? Did you do any docking ? No, just some hacky sacking.
After watching some girl on girl porn, we decided to do some scissoring of are own, I mean hacky sacking!
Matt said before he does anymore hacky sacking, he's going to get his scrotum waxed.
To take a dump in a pillow case or similar sack-like bag and then beat your partner with it. Commonly practiced by but not strictly limited to members of the homosexual community.
After a tiresome day at work Tarquin decided to go home, kick off his shoes and partake in a good poo sacking.