We know that the White Court feed while the victim is in the throes of a certain negative emotion (fear, despair, and lust, from what we have seen). Wrath has also been given as a potential White Court emotion.
We know from some things Thomas has said that White Court feedings involve a certain amount of intimacy and trust, a lowering of mental defenses. Lustpires, obviously, feed during the intimacy of sex. Fear and Despair-eaters eat during strong bouts of terror and depression, both things that can A) be indulged in privacy and B) would tend to weaken the mind's defenses.
What form might a deep feeding from a Greed-eating White Courtier take? Some interaction that involves physical contact, a certain amount of intimacy, and enough privacy that the initial deadly feeding wouldn't be immediately followed by a witch hunt?