Once Caught, Twice Shy - Jane Wilde, Leana Lovings, Holly Day

Holly Day, who is in a sorority, is so busy masturbating that she doesn't realize that not just one but TWO other sorority girls (Jane Wilde, Leana Lovings) are each spying on her from different ends of the room. When they spot each other both spying simultaneously, they silently try to get the other to back off such as by pointing accusingly and gesturing for the other to scram. But their silent, pantomimed argument ends up getting so heated that they end up making too much noise and are caught spying by Holly.