Will's eyes showed a small gleam of hope as Mark mentioned that they would pass by a bathroom on the way to the arena, but he just found himself locked into a conversation he felt obligated to finish before he just darted off. He forced a smile as he wracked his brain for the best way to explain his powers, coming up with nothing. His pause to think was starting to verge on an awkward silence so he just started blurting out everything that came to mind. 

"I can... stick to things. Kind of. I mean, like, you know how geckos can climb on ceilings and stuff? Yeah, that's what I can do. And, like, I can defy friction and slide across things. It's not really all that cool." Realizing he was starting to just babble pointlessly, he fell quiet, blushing a bit. He started walking a bit more stiffly, biting hard into his lower lip.