This effect is associated with Monkey D. Luffy, the central pirate character in One Piece, whose rubber-like body allows his limbs to stretch during attacks and comedic scenes. Short clips of his extending arms became useful audio material for anime edits, parodies, and animation remixes. Its exaggerated elasticity also resembles the familiar Boing Boing style of cartoon effects. The sound remains useful because viewers immediately understand the visual idea of something being stretched beyond normal limits.