He jumps, knife in hand, and whirls, making a sound he will completely and utterly deny later. "River!" He admonishes, wiggling a bit. It's cold!

He scowls at her then beckons her forward. The pie slices are all crooked now. "Come here and look at what you've done." His voice and face are fierce, but that doesn't quite make up for his mischievous and determined scent.