Often abbreviated as BHS, Big Heart Syndrome is where a person has such a big heart that they tend to care too much about others and are usually quick to fall in love/suffer a broken heart. Those afflicted with BHS also try to "fix" people or "fix" others current situations.
I look at the situations some of my friends and family are in, and all I can do is cry. My Big Heart Syndrome is acting up.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.