Last Resort Friend
The friend you call as a last resort when all your other friends are busy. You don't really like this friend and are prone to cancel on them if you get a better offer. You may be this friend to someone else.
Example:
Scenario 1
Bob: Hey are you free this weekend?
Friend: Sorry I'm not, got some family function I can't get out of.
Bob: Damn it everyone's busy, Guess I'll have to call my last resort friend.
Scenario 2
Tim: Hi Dan's just cancelled on me. Are you free tomorrow?
LRF: You only ever call me when everyone else is busy, I'm sick of being your last resort friend!
Scenario 1
Bob: Hey are you free this weekend?
Friend: Sorry I'm not, got some family function I can't get out of.
Bob: Damn it everyone's busy, Guess I'll have to call my last resort friend.
Scenario 2
Tim: Hi Dan's just cancelled on me. Are you free tomorrow?
LRF: You only ever call me when everyone else is busy, I'm sick of being your last resort friend!