No

Ms. A, her voice coming from practically next to your ear, says "No, John, you can't." You feel an arm slide around your waist and down your front, the fingers wrapping themselves around the base of your cock. A mouth wraps itself around the head of your cock while another starts sucking on your balls. You groan loudly. Someone starts nibbling on your ear.

You hear Ms. A talking very quietly next to the ear she's obviously nibbling on: "Now, you see how quickly he responds to the stimulation. What do you think would happen if we let this continue, class?" There's a popping situation, accompanied with a sucking sound from your cock. You hear Virginia speak from down there, "He would orgasm, and ejaculate into my mouth."

The thought of blowing your load into the mouth of a hottie like her just makes your head spin. Ms. A's tongue flits inside your ear, and then she says: "Exactly, but it's not time yet for John here to orgasm. We still need to repeat the demonstration on a female student. Do I have any volunteers?"