B.L.C.
Bad Life Choices
To be used when someone says or does something that will inevitably make their lives shittier and/or lead to years of regret.
"I'm thinking about getting a labret plate/ lower back tatoo/ becoming a bagel head..."
"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.