number jokes

This guy goes to prison, and he's not very tough, but he goes into the cafeteria at the prison and it's all these really rough looking guys who are like murderers and thugs and members of PACs and he's sitting there eating lunch and one of these guys all of a sudden shouts "Forty-Nine!" and everyone in the lunchroom starts laughing, and they're laughing, and this other guy shouts out "Sixty-Five!" and everyone is cracking up, and then this other guy shouts "One Hundred and Nine!" and the guys are like holding their sides and crying they're laughing so hard. Finally the laughter sort of dies down and the new guy turns to the guy sitting next to him and he says "Hey, um, don't you think this is a little odd, I mean, why does everybody laugh whenever somebody shouts out a number?" And the old guy says, "Kid, we've all heard all the jokes we know over and over, and it takes a long time to tell them, and we get bored easily, so we just numbered them, and whenever we hear the number, we think of the joke, and it cracks us up."

So, the new guy figures, "Maybe this is a way for me to get in with the other guys," since he had like been stealing paper from the office supply room or driving drunk or something like that, he wasn't a tough guy, so the next day everyone is sitting in the cafeteria, and all of a sudden the new guy shouts "Forty-Nine!"
And no one laughs.
So, he shouts "Sixty-Five!"
And no one laughs, but there is kind of a mumble.
So, he shouts "One Hundred Nine!"
And no one laughs, but they start like climbing over the tables to get at the new guy, and he turns to the old guy and says, "I told the same numbers as yesterday! Why aren't they laughing?" And the old guy says, "Kid, it's all in the way you tell it." [alt.: "It's all in the delivery, Kid.")