Brett saw the giant moving away and decided that it was now or never. Whatever was going on, Matt seemed to know something about it, and for sheer lack of any other options, Brett decided to go for it.
"Matt!" the tiny teenager shrieked, jumping out of the weeds where he was hiding. It was disconcerting to see the enormous head swing around, the gigantic gaze focus on his small, naked body. Self-conscious, Brett covered himself as best he could with his hands.
"Brett, there you are! Thank god I found you!"
"Matt, what's happening?"
"Uh, I was looking out the window and saw you shrink. Then I shrank, too. But not as much." Matt decided that he was telling the exact truth but had just left out some important details. From below, Brett didn't seem to catch on to the omission. Seeing the giant was swimming in what seemed to be a normal-sized t-shirt was enough for him to realize that Matt had also shrunk by quite a bit.
"So what do we do now?" Brett called up.
"Uh, well . . . what do you think we should do? I can take you home, or we can go back to my house. Or we could go someplace else. It's up to you!"