Drink up Definition 1 of 3Pro Tip 1/3Imperative Encouragement Often used to encourage a group to finish their beverages together. Everyone's finished their drinks. Drink up, we're leaving soon! Pro Tip 2/3Cheerful Atmosphere Used in happy gatherings to create a sense of togetherness. It's your birthday! Drink up and enjoy! Pro Tip 3/3Polite Reminder Can be used to remind someone politely to finish their drink. Don’t forget to drink up your juice before we go.