(slang)Synonym of snowflake(“someone who believes they are particularly unique and special; someone hypersensitive to insult or offense, especially a young person with politically correct sensibilities”)
2017 February 1, Dana Schwartz, “Why Trump Supporters Love Calling People "Snowflakes"”, in GQ:
The special snowflake is a whining millennial who protests instead of getting a "real job" and cries sexism because she's upset men don’t find her attractive enough.
Used other than figuratively or idiomatically:seespecial,snowflake.