When you see a homie that you have not seen in awhile and you go in for pseudo hug, but one of you shifts your footing and you accidently bump your hang downs.
John sees mike..
john: hey bro
mike: sup fool!
(dudes go in for a bro hug)
Mike: damn bro, you just lost your footing and package bumped me!
john: my bad, son
When two bros go to bone a chick but they are in disagreement over who gets what hole. Therefore they come to a compromise and tape there dicks together using duct tape and pound the chick. To ensure their dicks aren't touching, they slide a thin piece of folded notebook paper in between their dicks.
Ian and I were about to scrap when we couldn't agree over who should get to penetrate what hole on this classy broad. We eventually came to a compromise and decided that package stacking would be the way to go. We made her squirm like a harpooned whale and she is not going to be able to walk for days!