How To Permenantly Delete a File or Folder

I'd been having this problem with external hard-drives and memory sticks recently whereby deleted files just keep reappearing in a .trash folder.

This could be understandably annoying, particularly for someone who's new to uBuntu and doesn't know about hidden folders that thinks they're clearing space on their memory sticks... when all they're doing is putting it into a hidden folder.

Luckily there's a simple solution to this.

To delete an item permanently use the Shift + Delete and the item should stop reappearing in the hidden folder.