To bum, sponge off of someone with no intention of returning the favour. Usually the 'Mata' will borrow small items like pocket change or cigarettes so no-one notices they're a sponge, only everyone already knows.
The 'Mata': Can I borrow a cigarette man, I forgot to buy a pack today, I swear I'll give you one tomorrow.
You: Sure you will (hands over a cigarette).
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