[Jack peers over the edge of the fountain and down to the girl who just arrived. He grins.]

It's pretty thick. You should let him give it a try. It'll take a lot to melt this ice.

[Jack hops onto one of the frozen streams and slides down standing up like it's no big deal. He hops at the end, clearly he's very nimble and light on his feet. The frost spreads on the ground a bit as if to emphasize the cold he can generate.]

Unless you were wanting to try it first.