Unaware that a boyfriend and girlfriend's first time engaging in a bare-bottom challenge, with the clitoris and penis rubbing against each other, will their friendship succumb to lust and they be unable to resist penetration? SKMJ-366

Our popular series on testing male-female friendships is back! We've invited male and female college students to challenge each other in a secluded room with bare buttocks! Two people who have never considered each other as opposite sexes will rub their bare buttocks against each other's penises and clitorises! Until the female college student's vagina is completely wet, we'll thrust into her in one go and bring her to a climax, revealing a dazed look that only her boyfriend has ever seen!