He-Gassen (Japanese: 屁合戦) is a Japanese art scroll created during the Edo period by an unknown artist or several unknown artists. The scroll depicts various scenes with one peculiar characteristic reoccurring throughout the scroll, namely that at least one character is having a bout of flatulence directed against other characters. The name of the scroll roughly translates to "Farting Competition" or "Fart Battle". The scroll was made with the intention to highlight the political and social changes in Japan. This scroll and other similar drawings were created in response to increasing intrusion of Europeans in Japan during the Edo period.