1 definition by macademianut215

Top Definition
your sister who stands in LINE with you while pledging,not chilling in a classroom.
whos tha girl you were talking to?
oh thats gia my LINE SISTER, we put in work for our letters
ohhh okk!!!i see you!
by macademianut215 April 18, 2012
Mug icon
Buy a Line Sister mug!