What makes this especially hilarious, the second panel reveals that her flat chest does the bouncing SFX, because Ryuujou actually says the SFX herself
Im always amused how artists sometimes depict RJ as someone who can make fun of herself, i nice twist to the usual female character that has a breast complex.
bounce-bounceBounce-bounce.Oh, you won't believe, how stiff the shoulders can get,When you have big boobs...Bounce-bounce.bounce-bounceKuroshioWai-You-