I think we've all been in the shoes of this Outlook user at least once or twice:
This new Outlook 2013 drives me NUTS as it temporarily displays the stuff that I've just Copied wherever my mouse is now hovering in a document or in a Contact's Note section. I want to go back to the old reliable deal where I'd put my mouse where I wanted it to go and then do a RIGHT CLICK / PASTE. If I forget what will be Pasted, I can Paste it into a clear area so I can read it.
This frustrated user is talking about Live Preview, which displays the clipboard contents after right-clicking and choosing Paste, but before you select whether to paste plain text, keep or merge formatting.
To disable Live Preview in Outlook, go to File, Options, General uncheck Enable Live Preview. To disable it in Word, go to Word's File, Options, General.
With LivePreview disabled, the message, document, or notes field is blank until you actually paste into it.