To talk with someone that you admire for their skill, generally inquisitively or intimately; learn tricks from them, pester them with questions about their processes, find out what tools they use or, who they learned from.
Going so deep into their methods that you may as well be 'swapping heads' with them.
Person 1: "Ah man, I love your sketchbook. If you have the time, I'd love to swap heads with you for a bit."
Person 2: "Dude thanks, I really admire yours too - It'd be my pleasure."
A person you hate intensely not because they deserve such hatred but because they serve as a focus for your general hatred. A healthy way to dispense with excess animosity.
Jake's not really that big an asshole. He just serves as my hate sink.