Brother offered his sister and her friend a penis instead of a sex toy

Two girlfriends want to learn the wisdom of sex, so they practice pleasing men and getting orgasms together with a dildo. An enterprising student sucks on a sex toy and tastes her partner's hairy pussy. While the girls are masturbating each other's pussies with a rubber dildo, one of their brothers enters the room. He offers his cock to help, and the cuties instantly pounce on him. A modest blowjob turns into a threesome. While the male fucks his sister doggy style, she continues to pleasure the guest with cunnilingus.