Valkyrie: You know, this guy flies by pushing himself off the ground, right, but how does Superman fly faster?
Hubster: In order to accelerate, you have to have force going in the opposite direction, so in the absence of any other means of propulsion, he has to be farting.
Valkyrie: Which, in a weird way, makes sense, because the gravity here is different than that of Krypton, so you have to figure that his gut is all churny because the internal pressure would be different.
Hubster: You got it.
Valkyrie: Well, I hope he’s silent but not deadly.