Meaning of SL
What Does SL Mean? (Using SL Online)SL means "So Lame".
Summary of Key Points
Definition for SLSL means "So Lame". This is the most common definition for SL on Snapchat, WhatsApp, Facebook, and Twitter. Here is some more information about SL:
2: Quite easy to guess
Adults and Teenagers
A Text with SL
Using SL on a Cell Phone (SMS Texts, Whatsapp, and Yubl)