Step 1: Cue up "Thunderstruck" from AC/DC's 1990 album: The Razors Edge
Step 2: Get at least a 30 rack of beer and gather all of your mates in a circle
Step 3: ???
This game is about as simple as it gets. The idea is to circle the wagons like the Duke woulda done, and then waterfall and stop when "Thunder" or "Thunderstruck" is said in the song. Everyone cracks open a beer, and you press play. The first person starts drinking when "thunder" is heard in the first few seconds, and he/she can't stop until the next time "thunder" or "thunderstruck" is heard (at which point the next person starts drinking). This cycle continues clockwise until the song is over. The best part about this is the wide variety of length in betwixt the thunder strikes. I played this at a party one time and was lucky enough to have to chug like 2.5 beers in between meteorological events. Brutals.
BONUS: Merry Xmas you hideous creatures!