I leaned in to tell my good night and as I was 'tucking' him in my breast inadvertantly rubbed his face. I thought nothing of it until I realized that he had a painfully large erection! Since he was wearing nothing but briefs he certainly couldn't hide it! I considered leaving the room and acting like nothing happened. The tingling between my legs came over me all at once and I found myself longing to grab his dick and relieve him. My womanly breasts obviously turned him on and I wanted him to see them, feel them, explode on them... And he did! Surely it was better than any wet dream.