Popular in the south. "Truckin' off" is when 2 or more males get together and talk about the additions that they have added or plan on adding to their trucks.

They are extremely excited. It usually starts with a lone truck owner getting a new truck and then another truck owner comes along to "truck off" each other.
Person 1: "Larry and Bob always compare their trucks and talk about what they want to add and modify."

Person 2: "Yea, they love truckin' each other off"
by Chicago T-Money September 17, 2010
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