A man discovers his demure big-assed wife and daughter having a friendly conversation on the train, and it seems the big-assed wife commutes to work with her daughter. The man can no longer resist and touches her ass, and the big-assed wife is upset, saying, "Could it be me?" Perhaps it's her pride as a mother, but as she desperately resists so her daughter doesn't find out, she gradually becomes aroused as she is caressed relentlessly on her ass and pussy! Slowly, a stain starts to overflow from her pants... and finally, her love juice drips from her pussy and she falls into pleasure! She secretly cums over and over again so her daughter doesn't notice! She gets away from her daughter and has sex with her in a blind spot inside the train, refusing to give him a blowjob or have sex with him in a blind spot inside the car!