- Give his address to various mail-order cults. http://www.tomorrowsworld.org/orderfree.shtml
- Visit his Kingdom Hall. Shake hands with all the suited dudes. Casually mention that you are "old friends" with so-and-so, but you've both moved on. You are merely visiting for curiosity sake. Take all literature offered, but turn down the personal bible study. Mention an adorable habit or affectation that he has, and laugh. Tell the elders they have a very interesting church.
- I'll think of more later...
That sounds delicious (revenge is sweet ain't it ?)