An acronym for "bank-in-a-box." Also known as an automated teller machine, or an ATM. The term BIB (pronounced same as those things that go around a baby's neck to keep food off them, not spelled out ) was created due to its curiously British sounding tone while being an entirely American creation from the Boston, MA area. (Though some may argue that this still basically does make it British.)
Some friends are walking into a bar. One turns to the other and says, "I need some cash. Hold up a second, I'm gonna hit up the BIB."
Similar to how a glass jaw is when a fighter can't take even the tiniest hit to the head without falling, this is when someone can't even be lovingly teased without it becoming the deepest insult they have received in their lives and going into complete wangst mode.
When my diminutive sister showed me her 80's Halloween costume, I complimented the great costume, but couldn't help but tease about how the big bangs made her almost normal height. She spent the next hour crying about how ugly she and her costume are and what a jerk I am. What a glass ego.