"LOOK AT ME LOOK AT ME LOOK AT ME! Ok, what do you have? 40 slides that tell me nothing other than you have a big vision and if you own 10% of <insert market here> it will be worth a lot."
At this point, VC options are:
1) Hard pass (crazies, maybe 60% of people pitching), but you want them to still refer their friends for better deal flow, so <insert excuse here> that makes them feel better about rejection.
2) Soft pass (30%): maybe they have something, hard to tell without spending weeks figuring out what they really meant, and if the team is even the right team to be solving the problem, much less actually competent. Give them some <come back when> that doesn't ruffle them too much.
3) Next stage of funnel: The 10% that actually got their concept across, explained why they are a good team to implement it instead of the other 10 people you heard with the same idea, and why now is the right time. Enter diligence, and hopefully you can convince the other partners that you aren't crazy by taking a chance on them.