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

Large, beautiful breasts that are keep well consealed and initially appear to be much smaller and less impressive than they actually are until unleashed.

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.