Unless you live in a very odd, secluded trailer park; you probably dont' see custom football helmets that have been turned into beer helmets. Actually, my dad got one of these as a joke for Christmas one year. Through some trial and error, some thorough use and the subsequent falling down and into things, the football helmet aspect of this mechanism works quite well. Though, I wouldn't recommend wearing this unit to a tackle football game and expect the same results you'd get from a licensed NFL football helmet.
Football helmets are a form of safety helmets and are there to serve one purpose: keep your head protected. The sport of football is probably the roughest sport (some might argue hockey) there is and the athletes that play football are some of the largest on the planet. Thankfully, football helmets have changed quite a bit since the sport first started. Previously, a football helmet merely consisted of a few pieces of leather that were held snug against your head by two smaller pieces of leather that connected beneath your chin. These football helmets provided little to no protection for head to head contact. As you can see, football helmets have changed a great deal as the current NFL football helmets are specifically designed to reduce impact and keep the players head covered and protected regardless of the angle of impact. That's not to say that they work perfect, but modern football helmets are definitely better than those used in the past.
There have been a few times when the people wearing these fine football helmets have done some really amazing things. The moves these players make, the end zone celebrations and the infamous Super Bowl all put these high quality NFL helmets to the test. As a result of some the incredibly hard material these football helmets are made of, they can leave their mark on the human body if players aren't properly protected. The NFL has taken action against such deliberate hits and some players have even been banned from the league (Hi, Chuck Cecil). While other players have found other off-the-field activities to take part in, some are best suited in their uniform and football helmet.
Though football helmets are the only way to really keep players protected from the high intensity hits some of these players lay on, that's not to say that they are 100% effective. There will be times when a player is hit at just the right angle that will send the safety helmet flying. Though, this is usually a crowd favorite, it's a very scary time for the officials and for the players. Perhaps the league would entertain the idea of a carbon fiber helmet or another type of custom helmet that would provide adequate protection, but wouldn't be prone to slipping off. The occurance is pretty rare and most league execs would argue that the current football helmets do a fine job. Good thing they have pads.
Football helmets are usually a place where your favorite team's logo can be found and identified with by the fans. Whether it's high school, college or the NFL; your team's football helmet proudly displays the logo in all of its glory. Following your favorite team has become one of America's favorite pasttimes and turned into quite the spectacle on college campuses. Tailgating is a ritual college students take part in before football games in which they consume a moderate amounts of alcohol, play games and get ready to cheer on their school's team. If the game happens to be in the afternoon, some of these people could probably benefit from a football helmet after 6+ hours of drinking.