When you suffer from a lack of friends and generally a life and refuse to go outside because you're too sad

Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed

In a failed relationship/friendship: It is when a guy gives a woman a guilt trip for his malicious doings. Someone with Sadboi Syndrome manipulates people and always try to turn things around and act like they are the victim. Especially when exposed, they tend to act like they're suicidal to put a stop on women sharing their horrible experiences with them. The things that these guys do include cheating, manipulating, sexual harrassment and even rape.