For (poorly standardized) terminology such as "second granduncle", see first cousins twice removed.
he seeks and assesses the situation with his hands and tongue and finds no intruder...
They have changed their position on reparative therapy for homosexuality and has apologized to the LGBT community for the harm it has done.
Most of all, you can leave the door open so that he can talk to you about anything anytime. From studies of LGBT youth, we know that teens who do not have the support of their families tend to have worse health and mental health outcomes.
The terms grandniece and grandnephew (or great-niece and great-nephew) correspond to those of granduncle and grandaunt, expressing a third-degree relationship.
The terms great-great-niece or great-grandniece and great-great-nephew or great-grandnephew express a fourth-degree relationship.