Slate has a monthly contest about euphemisms with Barbara Wallraff (who, by the way, is living in Florence, Italy) as curator. She takes reader submissions and shares the best ones in a podcast. This month's contest was for new ways to say "incompetence in the workplace," such as chairwarmer, rock with arms and smooth-brained.
The next contest is for euphemisms for "beautiful," "hot," "very attractive," etc. Should be fun. Send entries here. Wallraff has cataloged past winners here.