RLHF = Right Left Hand Foot. It's a technique in Bavarian interpretative folk dance where you jump around, artfully hitting the soles of your feet with your hands in order to court women who are busy carrying unbelievable numbers of beer Steins into the mountains.

That's what came to mind when I saw the abbreviation. Then I looked it up:

Reinforcement Learning from Human Feedback.

"Rood Luck, Have Fun!" A rood is a unit of area that is equal to about one fifth of a football field.