roaches and Dhaka University teachers

I don't like roaches, but I like Dhaka University teachers even less.

Every time I see a roach, I reach for the insecticide spray and zap it. Sometimes I put it out of its misery by stepping on it, sometimes I don't – depends on my mood.

But you can't do the same thing with a Dhaka University teacher, can you? It would take a great deal of mosquito spray to get rid of this national pest, wouldn't it?