you know, if you're worried, you could always jerk the dog off with one of those transparent fleshlights first. so you can see and feel exactly how its going to absolutely wreck your hole, you know. see how the toy spreads apart so easily around that pointed head, pushing inch after inch of veiny canine cock inside, how its hips fuck and claws scratch getting a tight hole stretched around its cock, watch the panting beast fuck through the back of the poor toy before its knot is even out of its sheath, feel the monster throbbing through the silicon, see how the hole splits open when the brute fucks its bitch-breaking knot inside, head hanging out the back... go on, help it out, squeeze the broken toy around its knot and jerk off the exposed length, see how its heavy nuts pulse and the knot plumps up, fleshlight stretched thin in your hand, feeling every pulse of hot watery canine seed shoot out as the knot grows larger and larger, ruined toy falling apart and leaving you squeezing angry raw canine knot...