Brendon Urie went through many phases growing up.
That isn't uncommon, of course. Everyone goes through phases, especially when they're young. Brendon's first phase was when he was six; he remembered being really, really obsessed with cars. He would even collect them. Every time he saw a small car in a shot, he begged his mommy to please, please, let him get it, and that he would be a good boy and never get another car again if he got that one right there. His other would always chuckle and take it off the rack and put it in the shopping cart. Now press repeat.
This process happened nearly everyday for a month until Brendon got bored of cars. It was sort of sad too, because Brendon's mother had just gotten him the car set he had been wanting for a while. But being a boy, Brendon didn't care; he told his mother about his friend, and how he had the coolest thing ever: a CD player. That started Brendon's music phase, but he never really grew out of that one.
Even now, Brendon is still going through various phases; since he's turned twenty, he's been obsessed with shoes, belts, and Wii sports. See, his phases have always been towards things, material things. Never had it been towards a person; never has it been something that felt the love it received when Brendon was into it or felt the pain when Brendon threw it in his closet or in a box. Brendon didn't feel that pain either.
Brendon wasn't really a romance type of person. Sometimes he wanted some affection, but overall it never really bothered him. Even he had to admit that he definitely wasn't the epitome of a stud in his school days, so girls weren't exactly jumping all over him. To him that was a good thing.
And, of course, Brendon Urie was never into guys. That just didn't happen.
But either way, he could never imagine having a phase over a person. Sure, he had had crushes, but they were never overboard or anything. Just a simple longing that quickly went away. Definitely not a phase.
But one day, when he saw his best friend Ryan Ross, his mind went back to the day when he wanted the cars.
He got this sudden urge to point to Ryan and say, Mommy, I want that.