Four couples switch partners and experience the shame and pleasure of being violently penetrated by another man's erect penis in front of their husbands and wives. When the other husband's pants are pushed aside, his erect penis pops out, and although they are flustered, they can't contain their excitement. They get excited watching their husbands and the other wife penetrate them up close, and then they take the husband's erect penis in their mouths and get fucked hard by another man...