Submarine Races in the Mare Cerebrum

Conscious and Subconscious are swimming side by side, somewhere in the murk of the Mare Cerebrum. The following exchange occurs:

Conscious: "I don't have to swim faster than all the sharks down here..."

Subconscious: "Really? Why's that?"

Conscious: "...I just have to swim faster than you."

Subconscious: "Bring it, bitch!"

In an adrenaline-fueled burst, the fish take off like scaly missiles, bubbles in their wake. Behind and below, the sharks just bare their rust-tinged teeth, laughing as they, too, accelerate...