This reminds me of the 5 years-with-the-company speech I gave in front of a large audience in a meeting that I thought had been going too long. Before the speech, I calculated how many 15-second intervals I had been with the company (approximately of course). So when it came time to give my speech, I asked everyone to look at their watch for 15 seconds, noted that it felt like a long time, then stated how many times that we were in the meeting and tied it up with humor pointing out how much times that I had been with the company. Laughs all around, but everyone got the joke that I was pointing out about the meeting itself being long.