2boys, ass, back, bara, bare_pectorals, belly, black_male_swimwear, blush, bulge, couple, dark-skinned_male, dark_skin, erection, erection_under_clothes, from_behind, glasses, head_out_of_frame, imminent_anal, imminent_penetration, interracial, large_pectorals, long_sideburns, male_focus, male_swimwear, multiple_boys, muscular, muscular_male, navel, nipples, pectorals, short_hair, sideburns, spiked_hair, stomach, swim_briefs, swim_trunks, thick_eyebrows, thick_thighs, thighs, toned, toned_male, yaoi