
Be, feel, look, taste, etc. like nothing on earth
Context Matters
Understand the situation to get if it's praise or sarcasm since 'like nothing on earth' can imply both uniqueness and weirdness. 
Unusual Things
Use this phrase to describe something that stands out as very different and not typical. 
Not Always Positive
Remember that 'like nothing on earth' may not always mean it's a good thing. It can express negative surprise. 