Broccoli is very potent in vitamin C. Vitamin C maintains a healthy immune system. A healthy immune system makes a male appear strong and better suited for mating/reproduction. Vaginas sense this strength. Broccoli = vagina.
Plus, broccoli can be sold, which means money = broccoli
A stapler is used to keep important documents organized in a certain order. These important documents will eventually lead to the production or development of a product or skill. This product or skill will be sold. Selling something means to make money off that product/skill. If that money is being earned by men, this means that man + money = vagina.
Basically, an item is either made/grown/sold/written/purchased by a man. The man earns money from making/growing/selling/writing/buying this item. He then has money to spend on women = vagina.