When did you realize you enter the adult world?

hey fellow readers I was remembering the time I went to the house of the friend of my friend asking her where where her parents answering "mmm... in their house" I must put on a "what" face cause then she said "this is my house, I live with my husband" and then it strike me with shock ...I was in a point of no return. Hahaha it stills amuse me, so what about you?