When you don't have any money, you are low on cash, without funds, or just plain old "financially embarrased.
Hey girlfriend, me and my girls are going to check out that new movie, so how 'bout you? Sounds fun, but I can't this time cause I'm riding the greyhound.
My girlfriends went to the movies tonight, but I didn't go with them cause I'm ridin' the greyhound til I pick up my check from work.
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.