A character with a penis finds that they can reach their cock to their asshole, by bending their semi-erect penis. The character is compelled to perform penetration on themselves (selfanal or autoanal). The character stimulates the rim of their asshole with their glans. After some stimulation, the character either bends their cock more or has their penis grow enough to insert it further into the asshole. The character uses one or two hands to drive the penis in and out of the asshole. The character gradually reaches a climax, ejaculating inside their own ass. If there are other characters in the scene, they are impressed and turned on by the character performing the autoanal. These other characters they may help the character performing the autopenetration by pushing their cock into the asshole and/or by providing manual stimulation to the shaft and/or balls. These other characters may also, or instead, masturbate as they watch the character perform the autopenetration. Avoid using the term "and/or" in the generated text.