Pixiv user tags: "Social inequality in breast size" (breast envy), "The ignorantly chest-burstingly busty Tea-chan", and "Can't see in front of me" (for the punched-in face, originating from Crayon Shin-chan)
Updated
Wh-Why did you punch me...?You'll never understand the reason.*poink**boink**sproing**sproing**dyuksh!*A popular unconventional punching SE, see nico nico pedia for origins.