Sirius was going to out-wait her. "So that charm does nothing, then?" he questioned with a mischievous grin. A part of him did not want to open that bag in case something jumped out at him. A part of him did so he could figure it out. "Why don't you open it and get it over with then?" he said nudging the bag with his foot, causing it to open. OHBLOODYHELLTHENOISE! crossed Sirius' mind before he threw a random charm (one to catch it on fire) at his bag. He'd get a new one.