Stiles gasped, his eyes rolled slightly, and his knees went week as Derek turned on the plug and set it a couple of notches higher. Derek had chosen well with the plug because it rested against Stiles' prostate causing the boy to tremble as Derek pulled him closer.
"The shopping... both... I don't know," Stiles was squirming as he reached out to Derek to help steady himself. It was hard to think with the plug vibrating deep inside of him. "Oh god." Stiles didn't want to moan, not in the middle of a busy market, but it was becoming hard not to. "Please."