1boy, abs, arms_behind_head, bara, bare_pectorals, blush, breath, briefs, brown_eyes, brown_hair, bulge, clothes_lift, erection, erection_under_clothes, facial_hair, grabbing, happy_sex, large_pectorals, male_focus, male_underwear, muscular, muscular_male, navel, nipple_tweak, nipples, pectoral_grab, pectorals, shirt_lift, short_hair, solo, stubble, thick_thighs, thighs, twitching, underwear, veins