I kind of like it, but I find the incredible immaturity of the characters running Psych (Gus and what's-his-name) to be really grating. Yes, I get that it's supposed to be a comedy, but the lack of realism in their frequent bouts of juvenalia when their lives are threatened (the episode where what's-his-name *had* to stop and ride the dolphin, in the middle of their trying to escape, was over the top -- if it had been a book, that would have been where I would have thrown it against the wall) drives me crazy and makes me want to punch the writers. And the characters.
In other words: the joke is completely lost on you.