How do I make a lot of gold?

Ladies and Lurking Gents,

My boyfriend really wants the Grand Expedition Yak. But it costs 108,000 gold. He has resigned himself into never getting this yak.

Well, I haven't. I want to farm up the gold for him and give this as an anniversary gift. My issue is that I  have never farmed gold, or been very good at making gold.

I know this has come up once or twice, but can someone direct me to a post on W_L or to a forum that will help me find a way to grind out a crazy amount of gold?

Please and thank you!