Okay, Andy, that bitch wants a fucking tither, I'll give her one. Now someone says you know what it means. Spill the fucking beans, matey!
Well, a tithe is an ancient form of taxation, so I'm guessing a tither is someone who either pays or collects said tax.
So this girl wants me to collect a tax from her? You'd better not be bullshitting me, Dougan, or I'm sending you back to the Dimension of Infinite Crowes.