N. A curvy penis, particular when the curvature is extreme and puts the tip of the penis in an unusual location.
Etymology - Describes a penis so curvy and knarly that it could wrap around one's body like a sousaphone.
"Hey, I need some condoms"
"Okay, what kind?"
"Uh... Model W31RD1C7"
"Damn awkward condom shoppers... HAHAHAHA YOU HAVE A SOUSAPHONE! Well if you were trying to get in my pants your shit out of luck buddy, I only fuck men who curve less than 30 degrees"