Even using the words "reward pool rape" and "circle jerking" are pretty offensive terms that were coined by white straight boys who thought they were clever little nerds. You're not clever: you're an overly-offensive toxic troll who minimizes the suffering of less fortunate groups.
The term rape in this phrase is in the sense of definitions 2 and 3 below. Indeed the modern primary definition evolved as a narrower application of the general idea of seizing someone or something and taking them away by force, a meaning which has seen a revival since the early 18th century.
