Here are some return responses....
... that those of us who ride recumbents can give to the idiots that give us the daft comments.
1. "No brains, no headaches." (This basically goes for anyone who does anything stupid. Try it and wait for the dumb looks you get while the person tries to figure out what it means.)
2. "Bikes were around long before cars were, and will be around long after cars are gone, so why don't you get the $*@*! off of my road." (Only use this one when a driver says to you get off of the road.)
3. And my all time favorite: "Get Bent". Which is funny when you say it while riding your recumbent.