What 莲 means? does it has a "social" meaning, if it's used in everyday life?
i'm afraid there's no such bad meaning with 莲 in chinese,actually it's not a common word in daily life as it is not commonly seen.
however i'd say there's indeed a bad meaning if you insisted,莲 as a component of 白莲花 has two completely different senses of bitch and pure girl.the former  implies someone pretending and trying to make others believe her a pure one.
in other way you can also take it as homonym in 不要逼脸 which transform to 不要碧莲 that actually means 不要脸 or merely a joking phrase。