To accept a friend request on social media websites by people
who's profiles are marked private or "for friends only", with
the intent of checking out their profile pics and immediately
"unfriending" them based on the gut feeling you had by seeing
their initial profile pic. This also can come about via friend
requests from long lost friends or exes.
The underlying motive is that these people who get
"Pre-unfriended" won't notice that their friend request is
missing and not rejected.
Lisa, "Diane, check out your ex-high school boyfriend trying
to friend me."
Diane, "Eek! That's Eric, totally gave me the creeps on prom
night. Pre-unfriend him and move along!"
Tony, "Man, this chick can't take a hint Scottie! I have
Pre-unfriended her 7 times and she's friend requesting