President Barack Obama kept his mouth open just a bit too long at a Thursday event promoting literacy and “expanding digital learning” at the Anacostia Neighborhood Library.

Speaking with children about overcoming writer’s block, Obama went through a long explanation of how to write effectively before being cut off by the moderator.

“And I think you’ve sort of covered everything about that question.”

“Ok you think I’ve … no, let’s move it along,” Obama replied jokingly.