Exhausted from their workout, the stepmom and son collapse onto the couch, their bodies glistening with sweat. She leans in, kissing him deeply, her tongue exploring his mouth. He responds eagerly, his hands reaching for her ass. She straddles him, grinding her pussy against his growing erection. He pulls down her sports bra, sucking on her nipples. She unties her shorts, revealing her wet, shaved pussy. He fingers her, feeling her juices coating his hand before sliding his cock inside her, fucking her hard, their sweat mingling as they chase their orgasms.