To think a small problem is a big one; try to make something unimportant seem important. * /You're not hurt badly, Johnny. Stop trying to make a mountain out of a molehill with crying./ * /Sarah laughed at a mistake Betty made in class, and Betty won't speak to her; Betty is making a mountain out of a molehill./
MAKE A MOUNTAIN OUT OF A MOLEHILL
Meaning of MAKE A MOUNTAIN OUT OF A MOLEHILL in English
Slang English vocab. Английский сленговый словарь. 2012