Gus was always saying he needed a vacation from Psych, although Shawn was fairly certain his friend was just exaggerating. After all, how many people got the chance to help solve some of the city's worst crimes? Sure it was dangerous sometimes, but it was also fun, and Shawn was sure Gus couldn't possibly find a better way to spend his time. If anything, Psych was a vacation from Gus's boring job at the pharmaceutical company!
But over time, Shawn started noticing little things about Gus that he hadn't really paid attention to before. Or, if he had, he'd just chalked them up to putting in late nights solving certain cases or having yet another late-night Mario Kart tournament. Things like bags under Gus's eyes that suddenly seemed more pronounced when Shawn started tracking how long his friend had them there. Or things like Gus being a little slower to correct him when Shawn mispronounced a word (one that, of course, he knew but wanted to mess with Gus by saying wrong). Or Gus answering the Psych phone with his greeting for the pharmaceutical company.
And so, that was when Shawn decided to surprise his buddy with a little getaway from Psych. They'd close up the office, let the Chief know they'd be gone, and go off on some adventure or another. Shawn had been trying to decide between a trip to a pineapple farm or an amusement park, but then he remembered Gus throwing up after one too many roller coasters when they were kids and decided the pineapple farm would be a better choice.
Since he had Gus's credit card numbers memorized, it didn't even take very long to book the trip. He couldn't wait to tell Gus when his buddy arrived at the office later that afternoon. Gus was going to be so surprised!