Confessions of a Dirrty Mind

I had a dream last night that one of our team underwriters fowarded an email joke to our entire site, because he thought it was just the funniest thing ever. Everyone in our team meeting was laughing so hard after reading the joke, their eyes were watering. The punchline basically boiled down to someone not knowing the difference between titanium and silver. I don't get it.
Does this mean something??