Rule 34 Dev - all_fours anthro anus backsack balls blush buckteeth butt embarrassed eyebrows eyewear eyewear_only feet genitals glasses glasses_only looking_back male nude open_mouth perineum presenting presenting_anus presenting_hindquarters raised_inner_eyebrows rear_view soles solo teeth tongue wearing_glasses young young_anthro hthfp alvin_and_the_chipmunks alvin_and_the_chipmunks_(1983) simon_seville chipmunk ground_squirrel mammal rodent sciurid absurd_res hi_res monochrome sketch|9817186995