anthro balls bedroom_eyes blush covering covering_self duo father father_and_child father_and_son flaccid foreskin genitals humanoid_genitalia humanoid_penis male male/male narrowed_eyes nude parent parent_and_child penis pubes seductive shy size_difference son towel vein veiny_penis common_hippopotamus hippopotamid mammal hi_res
Let it all hang out, lad! 

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