You probo, can't you give me 50 cents for ice cream i will lend it back.
1. A homeless "street entertainer."
2. A normal person, with a job, who, in order to make extra money, facades as a homeless person.
Dude: "Hey, look at that hobo."
Dude 2: "That fucker works in the office across the street. What an asshole. He shouldn't take advantage of people like that. He's a probo!"