Meaning of GU
What Does GU Mean? (Using GU Online)GU means "Grow Up".
Summary of Key Points
Definition for GUGU means "Grow Up". This is the most common definition for GU on Snapchat, WhatsApp, Facebook, and Twitter. Here is some more information about GU:
4: Difficult to guess
Adults and Teenagers
A Text with GU
Using GU on a Cell Phone (SMS Texts, Whatsapp, and Yubl)