Who's Tom?

Now, Tom knew he wasn't very smart; and also knew that he had to find his own unique ways to go about functioning in society.  Tom was special in his own way; but even though he was bound for far simpler things than most, he still wanted to expand his understanding of the world.  So he developed a skill, or rather a knack to conceptualising the written language.  This knack laid in using ones memory to remember previously read letters, and construct sets of letters in a linear, sequential order (typically from left to right).  Once various sets of letters had been remembered, he believed that they would form ideas.  Often Tom would run into letter groupings with letter counts of staggeringly and often mind numbingly large magnitudes.  Such things as "news paper" or "WARNING: Fire Hazard" would baffle his tiny brain immensely. 
So when Tom began to try his hand at grasping the intricacies of the written language, he was intimidated, disgruntled, disconsolate, discontent, and a bit sceptical at his motivations; but in the end, he pushed on and reasoned quite a practical conclusion.
Tom concluded that all of the important letter conglomerations came in groupings of three.  He was filled with intense exhilaration as he settled into a steady, all encompassing view of the world.  Tom could now construct a daily routine for himself, and check it now and then to make sure he's staying on track.
Here's a quick summary, or rather, a staggeringly accurate descriptive account of Tom's average day:
When Tom gets out of bed in the morning, he goes to eat.  He rather liked eating, but less so if he got gas.   pee and sometimes poo would follow; but after his morning routine, things really start to pick up.  The afternoon is when he starts to have fun and really kick start the day; but all of this excitement tends to make Tom sleepy.  This is about the time when Tom usually concedes with a nice long nap.
5 hours ago, Tom found himself pondering intensely over a group of mysterious symbols inscribed on a build-it-yourself bird house instruction booklet, the symbols were "w," "o," "o," "d."  After considerable effort, Tom assumed correctly that these symbols were in fact letters and confidently settled into his formula.  He arrived, perhaps a bit hastily at the letter grouping of "ood."
Tom was confused.
Tom construed and pondered over the letters again.
"Woo."
Tom was excited.
Tom liked "woo," it meant he was about to have fun.  He was also quite fond of the words "wee" and "yay."  But it was late afternoon, and Tom had had enough excitement for the day, now was not the time for fun.  So Tom had a nap.