perhaps you could just manual enter all of the jokes through code... it would appear to be easier in my opinion
Code:
NSArray *myranjoke = [NSArray arrayWithObjects:
@"Joke #1 goes here",
@"Joke #2 goes here",
@"Joke #3 goes here,
@"Joke #4 goes here", nil]; // you can add as many as you want.. not just 4
int chosen = arc4random() % [myranjoke count];
nameofUiLabel.text = [myranjoke objectAtIndex: chosen];