zelda, that sucks, I'm a social gifted NT and I could never imagine how hard it would be.
I can only think of two options;
1. Lemons into lemonade-just laugh hah I thought you were done talking. Why be mad, laughter is better? Idk if that helps...
2. Micheal de Montaigne, French philosopher advising a friend with impotancy that was in love with a woman but kept pushing her away because of his condition. He told him to be honest with her, tell her the truth. You could try the same (don't say your impotent lol), "You know, I'm a socially awkward kid and I'm bad at knowing when people are done talking *haha!"