When his dad is away "on business". I'm a fun uncle, easy when looking after a 20 year old twink full of cum. His cock is a little larger than average, meat for my throat. He gives killer head (I helped train him), so hungry for man cum, so sweet. He found the cum filled condoms in the freezer, begged me to let him thaw and wear them. Sorry, son, those have been sold to a man who has interesting fetishes.
One secret he promised to keep. When he said, "Uncle Jon, you taste better than daddy", I replied do not EVER repeat that to anyone, son. And thank you
He loves it when I call him son. Kind of a mentoring habit I have with young men. They need to know someone is looking out for them.