Rule 34 Dev - alphys_(undertale) altered_perception bald blue_skin blush breasts breath buck_teeth chubby collarbone cowgirl_position cum_in_pussy dialogue exercise femsub fox_boy furry group_sex gym huge_breasts lying mirror multiple_boys multiple_doms navel nipples nude on_back penis precum pussy ring_eyes scalie sex smile smirk speech_bubble spread_legs squatting sweat tail text undertale vaginal wbnsfwfactory weightlifting yellow_skin|160145