I'm pretty good at picking things up from context, so I'm gonna say a tankie is someone opposed to the deployment of tanks against a captive civilian population, the police having tanks, and tanks' worth of tear gas being used on peaceful protestors?
(please don't reply with earnest answers to my question, thx)
EDIT - some of y'all are failing to follow this last instruction smdh
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Its what happens when you eat too many beans too fast, you become a "gas" tankie
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Its when you dump all your points into defense and endurance, you can "tankie" all the damage from the aggro.
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Its where all your poo and pee go when you don't have city sewage and you flush the toilet, the "septic" tankie
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Its a cute way to describing a large container for holding water for livestock, a "stock" tankie.