I find myself doing this as well. But often it is with people that just won't shut up with their technical mambo-jambo of how great something-something is. Aski

I find myself doing this as well. But often it is with people that just won't shut up with their technical mambo-jambo of how great something-something is. Asking questions would just make them talk for even longer, so I shut up, nod and am on my way as quick as possible.