Adrian was slightly curious as to why Kim seemed to be protesting. Didn't she want him sucking on her cock? She had seemed so eager before, and besides, he didn't have much choice. The way Rosa was fucking her sister, it was forcing Adrian to suck on every last inch of the cock in his mouth, slurping on it until he felt her suddenly cum into his mouth, the small boys eyes widening. It was nothing like Jinks' cum. This was far thicker, and it tasted so sweet it was almost addictive. Adrian hungrily swallowed every last drop, squirming around as he was still tied up on the ground and now pinned by the incestuous sisters ontop of him. Hearing Kim spoke....god it just turned him on even more, the small bulge between his legs twitching slightly, before he gagged on the sudden second load of cum. God there was so much. Jinks had cum literal buckets but Kim....god she made that seem like a puddle, but Adrian had little choice but to swallow most of it. A little bit of Kim's cum came out of the sides of his mouth, but most made its way into the boys stomach.