Read along to practice your English and to learn the English phrases TO MAKE A MENTAL NOTE and ON A SIDE NOTE In this English lesson, I wanted to help you learn the English phrase to make a mental note. When you make a mental note of something, it means you make an extra effort to remember it. Sorry if I'm squinting a lot today, it's brighter out than it looks. I should've worn my sunglasses. I'll make a mental note to bring my sunglasses out next time I make a video when it's sunny. So when you