have a 20 on (someone)(redirected from have a twenty on one)
have a 20 on (someone)
slang To know or determine someone's location. "20" comes from the CB radio phrase "10-20," referring to one's location. A: "Does anyone have a 20 on Danny?" B: "Yeah, he told me he's at Main and Auburn." Let me know when you have a 20 on them.
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