Meaning "Sorry to bother you"
a sarcastic remark when you ask somebody to do
something for you when you need a favor and they are too
busy or to stupid to realize you are really needing their
help. Stating that THEIR problems are far more important than yours and don't want to be inconvenienced.
For
example, let's say you are filling out an application somewhere and you need a pen and you ask one of the clerks to barrow a pen and they reply back "Sorry, i don't wear pins" - "STBY...."
OR
"Hey
mom, i need to be dropped off at school early, do you care to take me to school about 15 minutes early?"
and she responds "No, i have to
walk the dog during that time." "..... STBY"