Solid doesn't work this way. It works in combination with certain other behaviours.
a simple first way to set this up would be:
mouse cursor is not over egg - set mousecontrolledgraphic to mouse.x,mouse.y
but this wouldn't make the graphic go around the egg
another way would be to give the graphic bullet behaviour and set it's direction to mouse.x, mouse.y. set the bullet behaviour to bounce of solid and it will work.
another way would be to give the graphic drag and drop behaviour and mak it drop on collision with the egg..
another way..
well there are so many ways, but it all depends on what you are trying to do.
you might want to take a look in the manual to see why solid behaviour isn't working the way you think it should work. It was not meant for what you are trying to achieve.