![1boy 1girl abubu bad_id bad_pixiv_id bangs barefoot breast_squeeze breast_sucking breasts closed_eyes comic dual_persona erection eye_contact fingering foreskin genderswap genderswap_(ftm) greyscale hair_ribbon handjob hetero i-401_(kantai_collection) kantai_collection looking_at_another male_swimwear monochrome mutual_masturbation nipples one_eye_closed open_mouth ovum penis ponytail ribbon school_swimsuit selfcest sex shirt small_breasts sperm_cell swim_trunks swimsuit swimsuit_aside swimsuit_pull swimsuit_under_clothes swimwear topless translated uncensored undressing x-ray rating:e score:34 post #1996102](/cdn_image/preview/b9/1f/b91fb2c94e566ec4bc3e880282d1d2d1.jpg)
When two or more people sexually stimulate themselves or one another, usually with their hands. The range of participation can be as simple as two participants masturbating in the same room at the same time without any physical contact to a group of people all stimulating one another. In the case of two participants, one partner may stimulate the other, each partner may stimulate the other, or one may stimulate both themselves and their partner.