when this is said, it means
A. you dont know what ur saying
B. you joined an unkown conversation without knowing the topic
C. youre speaking gibberish.

How to avoid:
- Try to talk to people that normally talk to u without being an asswipe/bish.
- Dont change the subject every 3 seconds
- make sure youre speaking the local language, i hope your local language is not gibberish.
- if someone does say it, you say ur on about their faic. >:DDDDD

Talk to ncie chaps :D