Gimmicks

I recently decided to start peppering in "But what do I know" into my language more often, like a catch phrase (or a gimmick). If I may be so bold to say so on my own behalf, I think I'm notably smarter than the average bear. My speech, mannerisms, contributions, and behavior all reflect this. Yet many people I have to associate with at work treat me like a blithering idiot, probably because it's hard to see or hear anything when their heads are stuck so far up their own backsides. *frustrated exhale*

Anyway. I'm now addressing this by passively inserting my own bit of condescension as a response to their own. When I contribute an idea or suggest an improvement, knowing it won't be accepted, I just preemptively shut myself down with a comment that doesn't disagree. The other party could say "Yeah, what do you know, ya bleeping moron?", or they could get the picture and say "Wait, what do you know? I would like to find out." Either reaction is appropriate with this new response, so it's a good one-size-fits all phrase that doesn't easily backfire.