How a girl sleeps with a boy?

Usually they use toys like strap-ons and dildos. they play with each others genitals, like each others clitoris and penetrate each others vaginas and have sex.

To give oral, they would lick the external genitals to make it wet (have the other girl orgasm) and finger her (penetrate the vagina deep with the finger) and rub the clitoris.