1.
making a mountain out of a molehill; exaggeration
To exaggerate a small matter into something much larger; to blow things out of proportion. Literally: making a needle (small) into a stick (large).
Related Words
Synonym:
大げさ (exaggerated)
Synonym:
誇張 (exaggeration)
Compare:
尾ひれがつく (to be exaggerated)