Boomer Troll
A member of the boomer generation who is also an internet troll. Boomer Trolls are often single, white, overweight males who troll people online via email, social media or text messages. They typically lack the courage to face their victims in person, instead choosing to attack them from the comfort of their smartphone or computer.
My brother is such as boomer troll! He keeps emailing me disturbing pictures but won't actually pick up the phone.