![1girl :d absurdres ahoge bare_shoulders bikini blush breasts buttoniris chibi chibi_inset commentary english_commentary english_text eyebrows_visible_through_hair fate/grand_order fate_(series) female_pervert food fruit fujimaru_ritsuka_(female) green_eyes hair_intakes highres holding holding_stick legs_apart long_hair looking_at_viewer medium_breasts navel nero_claudius_(fate)_(all) nero_claudius_(swimsuit_caster)_(fate) open_mouth pervert red_bikini smile solo standing stick striped striped_bikini suikawari swimsuit twintails v-shaped_eyebrows very_long_hair watermelon wristband rating:s score:6 post #3876503](/cdn_image/preview/8e/fc/8efca9abec1d0f280a65a29aa7a95293.jpg)
Suikawari (lit. watermelon splitting) is a traditional Japanese game which usually takes place at the beach during the summertime. It is similar to the Western party game of hitting a piñata: players are given a bat or stick, blindfolded and spun around three times, then attempt to strike the watermelon. Whoever cracks the watermelon first wins and afterwards the remains of the watermelon are shared with all participants of the game.
Might also involve a pun involving Ibuki Suika of the Touhou series being hit on the head, somewhat based off a line in Yuyuko in one of the games about going "Suika Bashing" when fighting her.