Last night, I went to my girlfriend's best friend's house to pick her up. It was two a.m. and her friend had fallen asleep. While my gf went to the bathroom before leaving, I kissed her friend's neck. I got so into it, I took my penis out and stuck it between her lips softly. Suddenly, she licked it without opening her eyes. I'm still not sure if I woke her kissing her neck.