How do i get glue off my drawers?

Right, my drunken friend went fiddling around in my house with some glue. Found some small drawers that you just hook your finger into and pull out, like a tool drawer to hold screws. He pulled them out and put the glue on the back of them and on the sides. I can kinda get the sides free but how on earth do i get the glue off the back of the drawers. I cant take the back off and I can not expose the back at all. I really need help please. big time

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