The Big ImageBoard (TBIB) - 2018 ambiguous gender ambiguous penetrated ambiguous species anal anal penetration anthro balls bent over table big penis blurred background brown body brown fur butt clothing coat doctorotter faceless character flat colors from behind position fur genitals huge penetration huge penis lab coat lutrine male male/ambiguous male penetrating male penetrating ambiguous mammal medical instrument mustelid nipples overweight overweight anthro overweight male penetration penis pink nipples scientific instrument sex signature stethoscope tail grab topwear zomacaius