Mark was stocking produce at the grocery store when a man, Joe, approached, asking, "Excuse me, where's the broccoli? I can't seem to find it."
Mark replied, "I apologize, sir, we're out of broccoli today. We'll have more tomorrow morning."
Resuming his work, Mark was arranging oranges when the same man tapped his shoulder and inquired again, "Where's the broccoli? Do you have any?"
Mark patiently responded, "No, sir, we're still out of broccoli. We'll have some tomorrow morning."
Moments later, Joe confronted Mark once more, demanding, "Why can't I find any broccoli? Where is it?"
Mark said, "Please indulge me for a moment. How do you spell 'cat' as in 'catastrophic'?"
Joe answered, "C-A-T."
Mark continued, "How do you spell 'dog' as in 'dogmatic'?"
Joe replied, "D-O-G."
Then Mark asked, "How do you spell 'fuck' as in 'broccoli'?"
Puzzled, Joe said, "There is no 'fuck' in broccoli."
Mark exclaimed, "THAT'S WHAT I'VE BEEN TRYING TO FUCKING TELL YOU!"