That Awkward Moment When You Turn into a Water Goblet

Remember how Ron broke his wand in his second year? Remember how it backfired, and made him eat slugs? Remember how it backfired, and made Lockhart lose his memory? Here's what happened as it backfired while Ron cast the spell "vero verta", or the spell that, in the movies at least, turned Scabbers into a goblet.