Nah, man, let's not hang with BLC; I've heard enough Jack Johnson this week.
To be used when someone says or does something that will inevitably make their lives shittier and/or lead to years of regret.
"Yeah, because you definitely won't regret that 20 years from now. B.L.C."
Whatever starts off as a impulsive choice based on fleeting youth or can be explained with "YOLO" is most likely a B.L.C.