Well, yes, beer does go bad, but exactly when depends on your definition of bad (and possibly how many you've already had!). So, does beer expire... when properly stored, the shelf life of beer past its best before date is approximately: Although all food and drink lasts for a shorter period of time if they are not stored properly, proper storage extends the shelf life of beer beyond its best by date.
If disturbed by a blockhead attacking or approaching too close, the troll will pursue the interloper. It is almost as capable of climbing (including ladders), jumping, swimming, and otherwise navigating a cave as any blockhead, although it moves slower, allowing most blockheads to escape.
Unlike some of the more intelligent trolls like the debate troll, the grammar troll and the blabbermouth troll, the profanity and all-caps troll is the guy who has nothing really of value to add to the discussion, spewing only F-bombs and other curse words with his caps lock button left on.