"I can take you all anyhow!" Sarah declared, rolling to the side to try and avoid the first wave of Peter's attack on her as she pulled another can from her back pocket. It wasn't entirely effective but it spared her about half of the contents of the can attaching themselves and it allowed her a decent view of when Peter started to improvise.
Showoff.
Her laughter carrying that thought as well as vocally carrying over the top of the chair, she reemerged and aimed now for Monty with the rest of the contents of her older can, using the new one entirely for Peter.
With Peter thus occupied, Simon saw his opportunity and stood up, still holding the cardboard, and attempted to empty the rest of his can as close to Peter's head as possible. Though Simon's attention was on his task, Monty's, as he reemerged from under the sheet, was on what exactly Peter was doing.
"Hey, Uncle Peter!" There was a level of indignation in the tone that one might not have expected, but it all made perfect sense to Monty. Peter was using the cool trick on Toby!