Or use pure capsaicin oil if you can find it or if your feeling a little kind use Blair's Ultra Death sauce which is about 1.1 million on the scolville scale. He would be crying afterward.
You beat me to it.
We used to have a bug zapper and every day it would catch at least 3 Jap Beetles. And I'm telling you now..... they smell absolutely revolting when they're frying. Place a couple in some home rolled smokes (branching off of other people's ideas). And the capsaicin oil.... I have seen grown men who chew so much they shouldn't have any feeling left in their jaw, Cry and enter a fetal position after eating a Habanaro, which is NOTHING compared to the Bhut Jolokia pepper. Pure capsaicin would have this punk, which has probably been pampered his entire life, enter the ER out of pure shock to the pain. ( Better idea is put minimal amount of black powder in the cigar as mentioned, but put Jalapeno juice closer to the mouth piece, that way when it goes poof, the juice will get into his eyes and nose, which will have the twerp screaming).
Just ideas.
EDIT: P.S. too much capsaicin can cause damage to eyes. Thats why I said Jalapeno. Actually, better yet, use pure oil and have a giant glass of whole milk standing in your window.