He was getting the hang of shooting them, even if Peter never expected to have the skill that Peter Parker had with webslinging. Still, it was effective enough for a silly string war.
His webs stuck Monty to the sheet he was peeking out from, and on Simon's hand, the one holding his remaining cab of string. The last was launched at Sarah, but went wide and missed. Peter dropped off the ceiling then, landing easily on his feet, and then remembered to say, "Boys, no trying that trick without me helping you."