In A Nut Shell

When you say this to me, it usually means that you have rambled on about something that most people will find completely irrelevant. Then, to supposedly summarize, you say, "in a nut shell" and I immediately think, "what size of nutshell?"  After all there are a lot of sizes, will your summary require a coconut shell? or will it fit into a pinon nut shell? So the next time you attempt to drag on something you are telling me, then begin to sum it up with this phrase, don't be surprised if I ask you what size.