Melonpan is a Japanese term used to describe a specific type of adult content. It refers to a particular fetish involving the female breast, particularly those with a round and firm shape. The name "melonpan" comes from two words: "melon," which represents the voluptuous appearance of the breasts, and "pan," a shortened form of "pan-kuku," a Japanese onomatopoeic term for flattened bread buns, which is used as a slang term to describe a round and firm buttocks.
In adult content, when a video or image is tagged with "melonpan," it means that the focus is on breasts with a specific roundness and firmness, similar to the appearance of watermelons or bread buns. This fetish often appeals to those who find this particular shape visually stimulating.