Hmm. I see it more as the anthetisis of the musician's use of "in the pocket", meaning solidly with the rhythm. "I'm sorry, I'm just totally out of the pocket on this song today. Can we work on something else for a bit?"
Ok, my 2 cents, this is not a phase... But I become completely irritated when I hear the word "like" used frequently. It makes want to exit any type of conversation that person has to offer regardless of age or media type.
That's the only context I've ever heard it in. ("In the pocket" I've only ever heard either as being "in someone's pocket", meaning bought and paid for by them, or a more literal horse-racing reference to being in a 'hole', between other horses or other horses/the rail.)