What does ISTG stand for?
What does ISTG mean? We have 10 definitions. Read most used ISTG meanings below.
What does ISTG mean? We have 10 definitions. Read most used ISTG meanings below.
ISTG means "I swear to God." Used to express extreme exasperation or annoyance at what someone is saying.
— You haven't even been to their concert and I have!
— ISTG you're so annoying!