Meaning of SUM1
What Does SUM1 Mean?SUM1 means "Someone".
Summary of Key Points
Definition for SUM1SUM1 means "Someone". This is the most common definition for SUM1 on Snapchat, WhatsApp, Facebook, and Twitter. Here is some more information about SUM1:
1: Easy to guess
Adults and Teenagers
A Text with SUM1
Using SUM1 on a Cell Phone (SMS Texts, Whatsapp, and Yubl)