3 Things you Really Shouldn't Give at Xmas

1. Anything 'Spicy'  when you are not at least 75% sure....

...about that person's likes in that spectrum.  

2. Anything that promises more than it actually is...

 Similar: Those square engagement-box packages, unless you're really going to propose.

3. Anything that could hint towards a flaw

"no sweetie, you're not too pale"

Especially with women: they have elephant memories concerning these things.