1.Bromwell is funny because it is an off the wall exaggeration of public
schools. By exaggerating it, we can laugh at its absurdity.
Exaggeration is one of the oldest forms of comedy, and it can be traced
through time, through Commedia del'Arte in Medieval Italy, through
Roman political pieces, and through Greek festivals.
2. Some lines are a bit more clever than people give them credit for. an example "I'm retiring because I won the lottery!" "How much did you win?" "180 pounds." "Well that won't last long" " I said I'm retiring. You can't stop me. No-one can stop me!"
3. Most "clean" jokes, as people call them, were done long, long ago. They could either be original and funny, or be "clean".