Having tight pockets; reluctant or unwilling to part with money or help someone else in any way; cheap; suffering from "Mr. Krabs syndrome;" doing any and everything possible to save money or get out of spending money; reluctant or unwilling to share ANYTHING with another person.
Carl: "Hey, bro, can you spare $5 for gas?"
John: "(sigh) Yeah, I guess."
Carl: "Well, gee, don't worry about it, Mr. Krabs. So stingy. "