Now that's embarrassing, because up until now, every time I've said, "I know it like the back of my hand," I've really been saying, "I'm totally familiar with that, I just don't know it's freaking name, right?" And the link I clicked on here, well, lemurs, monkeys and chimpanzees have the little opisthenar.
Esto es vergonzoso, porque hasta ahora, la expresión "lo conozco como la palma de la mano", indicaba "estoy totalmente familiarizado con eso", pero ni siquiera sé como se llama el dorso de la mano ".