The phrase "inside line" refers to having an advantage or being in a better position compared to others. It typically conveys the idea of being ahead or having the upper hand in a situation or competition.
Sentences with «inside line»
Your baby is being exposed to toxic chemicals laden inside the lining of the diapers create health problems? (myblossombottom.com)
This puppy is being «taught» to stay inside the line with the use of a shock collar. (dogpsychologistoncall.com)
It's your world — only stay inside the lines if you want to. (mindbodygreen.com)