Cách sử dụng
The expression "grub up" is a casual way to say "let's eat" in informal situations. You can use it with friends or family when you are ready to start a meal together. For example, you might say "Okay, everyone, grub up!" before you all sit down to eat. It's important to note that this expression is very informal and may not be appropriate in more formal situations or with people you are meeting for the first time.