A yoghurt face is a term for somebody with a soft face. A soft face can be defined as someone with either soft facial features, or (more insultingly) not much about them.

This term can also be seen as a sister insult to yoghurt top meaning someone who is soft in the head.

This insult is commonly used amongst silly oIrish boys with crappy hats :)

When you eat dirt for the first time and leave your family to build a shack in the woods