To be hung like some fish means your penis is purportedly comparable not to that fish's penis, but to the whole fish. A Northern pike (Esox lucius), the species of pike most familiar to your average Brit, grows up to 150 centimeters (59 inches) long.
When Charlie savage inhales a bottle of whicky on a Friday and spits statutory rape game on Jessica. Then wakes up to become the infamous hung dog millionaire
Harry :Charlie why you so hung, just firm it pussy
Charlie: shut up you smellysaliva eating squatch