Speaking of short jokes, here's a longer joke about short jokes;
Derek is sent to prison. During his first dinner there, in the crowded dinner hall, one of the other prisoners stands up and shouts, "24". All the other prisoners fall about laughing. A second prisoner stands up and shouts, "167", again, all the prisoners laugh - some even literally roll in the aisles.
That evening, Derek asks his cell mate what on earth was going on. "Ah", his cell mate replies, "We've all been in here a long time, and there's only one joke book in the prison library. We've all read it so many times that we know it off by heart. We just shout out the page number of the joke and everybody knows what we mean".
After a couple of weeks of this, Derek feels confident enough to try for himself. During a quiet period in the dining hall he stands up and shouts, "138". Silence. Nobody even giggles. Mortified, he sits back down. His cell mate turns to him and says;