Fili focused his attention then in Thorin only, taking his uncle's arousal with both hands as he made his way down Thorin's body between kisses and soft nippings reaching for his hips. From the base to the tip, Fili lapped at the throbbing member in front of him a few times to then take the head of Thorin's cock into his mouth, groaning at the taste of his uncle's precum. Slowly the young dwarf began to move his head up and down taking more of Thorin's cock every time, taking his hands to his uncle's hips to press under the hipbones. He would make sure to pleasure his uncle to the point of driving him insane and taking his cock deep down, Fili pressed his lips against the base as he let Bilbo's thrusts to push Thorin's cock inside his mouth.