Doppelgangers are a weird enough phenomenon on their own, let alone if you were working in your lab and you suddenly find yourself stuck in a room with a big, grinning, rubbery clone of yourself blocking the doorway out. And then it's tackled you and flumped atop you on the floor and it's licking its lips and openly opening its mouth to huff oddly-warm latex-smelling breath on you, and it's drooling and licking and yawning right around your head and its stomach is growling and oh nooooo
So anyway, Kotetsu commissioned some pooltoy teasing. And so he got some. In this case, it's a doppelganger of himself, since he's on the receiving end of the teasing, but if you'd like you can imagine whatever other creature you might like? Long as they're: 1) breathing right in your face, 2) a pooltoy, and 3) pinning you down while teasing you with the open mouth you're going to go into, then you're good!