A person who doesn’t tip or tips very small amounts in a bar or restaurant. Refers to people who, like a flea, metaphorically have arms that are too short to reach down to their pockets.
In the hope of getting a decent tip, the bartender presented the bar tab to the person that he knows tips well, not to the flea next to him.
Someone who gives very low tips; in a bar or restaurant; a bad tipper; someone who, like a flea, has (so to speak) arms that are so short, they cannot reach into his pockets.
Hoping for a good tip, the bartender presented the bill to the guy in the red shirt, not his friend. That’s because the friend is a flea.