a person who for some unknown reason pretends to be your friend then harrasses you for no reason then denys it all then admits it then denys it again then tries to get you to feel bad for alerting an adult of the situation
Christina is a backstabbing liar all of the time and cant be trusted.
-a very fun thing to do when you are bored and driving around with your homies. Whenever you drive by someone that is walking/jogging on the sidewalk, simply stare them down and yell, " BACKSTABBER "
Ernest and I went backstabbing last Friday and we got Baby Bull.