This is BAD VERY BAD! I can see the little suburban BBQ; every one having a good time. Then after 6 or 8 beers all the
boys start talking about toys, how macho they are and who has the biggest (uh umm chainsaw) and then the host whips his out and says: "Watch this!" Now of course every one is thinking this is cool and wants to do it also. The host only having a handful of beers at this time is still capable of not being a total idiot and will not allow guests to do the same.
As the day wears on and every one is asking him to open more beers, his neighbor is getting jealous because his new Harley is not the center of attention, decides to go get his full blown cookie cutter 3120 he bought for the occasional tree pruning in the back yard.
He purchased it because he just need a bigger one than his neighbor and the only way to do that was to buy one. By this time every one is half drunk and the pizzing match starts seeing who can open the most beers the fastest in a full on chainsaw race. Well one thing leads to another and the host is upset because his is not impressing his girl like his neighbors' is. While his neighbor is explaining how fast his newly modified saw is to the hosts Mrs. The host reaches over to open the beer in neighbors hand and accidentally whacks off his thumb. Now with out a thumb it is almost impossible to hold a beer and the full beer hits the ground. PARTY FOUL! Spilt beer. That's it, party is over.
See how bad this is? It's all fun and games till you start spilling the beer.