crazy sink idea?

Ok, I want a sink in my TD, but I don't want to give up all my counter space to put in a sink. I think I have an idea that will give me a sink, without having to lose my counter space. I present my idea to the wisdom of the group for consideration.
Basically, in stead of permantly mounting a sink, the drain line would run to a 2 inch hole on the counter top. The "sink" would be a properly sized bowl or basin with a male drain hanging from the bottom. when the sink was needed, simply insert into the drain hole in the counter top, but the rest of the time it could be removed and stored out of the way, leaving very little lost counter space. What to y'all think? really bad drawing below.
Tom
Basically, in stead of permantly mounting a sink, the drain line would run to a 2 inch hole on the counter top. The "sink" would be a properly sized bowl or basin with a male drain hanging from the bottom. when the sink was needed, simply insert into the drain hole in the counter top, but the rest of the time it could be removed and stored out of the way, leaving very little lost counter space. What to y'all think? really bad drawing below.
Tom