Present and Accounted For

Reminiscing aloud about Elder Son's birth, The Husband mentions how a class of med students came into the delivery room to look up the hospital gown of the woman giving birth to his first-born child.

Me: I was there, and I don't remember that.

Husband: Oh, it happened. 

Elder Son: I don't remember it either.

Husband and Me: You weren't there yet.