My sisters friend spitted in my mouth....terrible taste...?

today i somehow went to sleep listening to music....my sister and her friends were playing truth or dare downstairs.....one of her friends(female)got a dare and came up to my room and spitted in my mouth...i woke up and started to shriek at her and she went away saying it was a dare.....my mouth is getting so much sour taste right now...what should i do..???