glue the telephone receiver to it's cradle, then ring him.
lightly a full mug of coffee to his desk - when he can't lift it the first instinct will be to apply more strength....
punch a hole in the base of a can of coke, then fill it with milk and reseal it. (can induce vomiting so stand well clear)
use his e-mail address at a porn subscription site. (risky)
Great Prophet of Veedism.
non quod sed quomodo"BBQ fluid is a sweaty one night stand compared to the long term relationship of a properly burning wood fire."
Cool in a fuddy-duddy old fart kinda way -
Wingnut