Why do liquids and gases take the shape of their containers while solids do not ?

The molecules of liquids and gases are quite apart that the attraction between them is quite weak compared to that of the solids. Hence, they only take the shape of their containers. On the other hand, solids have definite shape because of their well-structured lattice and that the molecules are closely packed together. 

Simple, don't do it. just don't go to that dock