1 definition by Howard the loudest
The know ledge is defined by the furthest known region of the known (sometimes referred to by earth people as the "observable") universe; the edge of the known universe. Much like a rainbow, which also cannot be gone over, no one can really go over the know ledge because it is constantly receding into the unknown, because much like water, it too is scarred of everything it sees.
Greg: My alien girlfriend took me to see the know ledge last night.
George: Dammit greg, you need to stop taking shrooms
George: Dammit greg, you need to stop taking shrooms
by Howard the loudest July 19, 2013