Ben couldn't form a coherent thought if his life had depended on it. All he could do was cling to Dennis and gasp out nonsense words of agreement. His nails dug into Dennis' shoulders, and his legs were tight around the other man's waist.
"Fuck, yeah, harder," were all he could manage, in varying degrees of coherency. Sparks kept exploding behind his eyes as Dennis pounded into him, working his prostate with every stroke.
Dennis bit into his shoulder, and the pain brought him back to himself enough to bring one hand down between them and jack himself off clumsily. "Me too," he panted, eyes opened so he could watch Dennis lose himself. It was enough to bring him over the edge, and he came messily between them.