The Big ImageBoard (TBIB) - age difference ambiguous fluids anal anal juice anal penetration anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro anus backsack balls belt bodily fluids bottomwear butt canid canine canis clothed clothing cross-popping vein dobermann domestic dog duo english text father (lore) father and child (lore) father and son (lore) from behind position fully clothed fur genitals grounded hi res hickeybickeyboo incest (lore) instant loss 2koma intraspecies jacket jock larger male larger penetrated letterman jacket male male/male male penetrated male penetrating male penetrating male mammal mature male nude older male older penetrated open mouth pants parent (lore) parent and child (lore) parent and son (lore) penetration penile penile penetration penis in ass perineum pillow pinscher profanity sequence sex shirt size difference smaller male son (lore) son penetrating father speed bump position sudden sweat teeth text tongue topwear yelling younger male