[deathanatos]

You say that, and it sounds like it ought to work, and yet…

I had to do that to a co-worker, and all I got back was "Product Foo". Okay, but what about Product Foo? Blood from a stone, every damn time, and it wears me down.

[wool_gather]

Well, that kind of reply is just rude, and personally I'd probably ignore it and leave the meeting declined. If it comes up later, "Your reply about the meeting? No, I don't think...oh, I did see it, right. I assumed there was more info coming; I'm totally focussed on $X right now, you know."

[AlexCoventry]

"I'm sorry, my responsibilities don't leave me any time to discuss Foo in general terms at the moment. If you really you need me to, please raise it with $manager, and we will reprioritize my duties."