Two straight-laced friends, always competitive, challenge each other to a "gay porn marathon," laughing it off as a joke. As they watch scene after scene, their laughter fades, replaced by a growing tension. They catch each other stealing glances, their erections tenting their joggers. One night, fueled by alcohol and hormones, they give in to their newfound curiosity. They tentatively touch each other, their hands exploring unfamiliar territory, before they both pull out their cocks, starting a slow, intense jerk-off session.