wordstipation
(n.) A condition suffered by writers when what they want to write is all there in the writer's head, but the words just won't come out onto the page.
Jen: How's the new book coming along?
Rod: I have wordstipation. The story's all there in my head, but it just won't come out onto the page.
Rod: I have wordstipation. The story's all there in my head, but it just won't come out onto the page.