Ken then pressed his dick against Lei's asshole while his brother's cock was embedded in her pussy. As he pushed, the head made its way into her. She told him to go slowly and he complied, pressing more of his dick into her a little at a time as the rest of us looked on watching this double penetration play out in front of us. My girlfriend's slutty actions were on display for us all. When Ken was in her ass about halfway, he started to slowly pump in and out. This signaled his brother to start thrusting into her pussy. Both guys smiled and high-fived each other. I guess...