"A gurn is a distorted facial expression and a verb to describe the action. A typical gurn involves projecting the lower jaw as far forward and up as possible and covering the upper lip with the lower lip."

This LoRA is just about that: making funny gurning faces!

Trained with Z-Image Turbo model, yet seems to work also with Z-Image Base models (but with a lower effect)

To trigger it, mention the word "gurning" in the prompt. Or better yet "gurning expression" or "gurning face", "funny gurning expression", etc.