The pack game refers to TCG's(trading card games.) You can play with 2 or more people, but the more people the better. I prefer using magic the gathering cards. You open your pack face down and shuffle it. Now pick a varying random statistic on the card (set number, alphabetical order of the name, amount of vowels on the card, mana cost, BE CREATIVE!) once you have decided the statistic, everyone flips their card over. Whoever does not win that round must tear the card that they flipped over. Repeat this process until just one person has card/s left.
Lawrie: I was in the toilet and this man started smiling at me after he gazed at my pipe
Professor V: Watch out because he is a Peter Packing Peter Gazer, a dude who loves ramming other dudes after looking at their spears
Lawrie: Let's get the hell out of this area please
Professor V: Yeah, there are too many Gazing Packers out there