Denver comic Josh Blue performs during "50 First Jokes" at Denver's Bug Theatre on Saturday, Jan. 2, 2016.

(Courtesy Carlos Madrid)

Sports superstars and true crime documentaries were hot topics during Denver's "50 First Jokes" a couple days after the New Year rung in. The annual event that challenges 50 stand-up comedians to craft a new joke to start 2016 sold out. 

There were only two rules. Comics had to write their material after midnight on Jan. 1 and the jokes couldn't be longer than two minutes.

Check out five of the jokes by clicking the listen bar above. This was recorded at Denver's Bug Theatre, featuring bits by: