Garry was depressed..

Garry was depressed, he told his psychiatrist, because he thought he was gay.
"Why do you feel that way?"
"Because my father was a gay."
"Being gay is not hereditary", said the psychiatrist.
"My brother is gay."
"That still doesn't mean that you are".
"My Uncle Bruce is gay. And my cousin Jeffrey is gay."
The psychiatrist gave a concerned look and frowned.
"Does anyone in your family have sexual contact with women?", he asked.
"Yes", said Garry, "my sister does."