1. Polish Bubble Juice or PBJ, is a pink colored, bubbly drink from Poland. This drink dates back to the early 90's and was served at college fraternities as a part of some hazing procedures.
2. A drink (as described above), commonly drunk by healthcare workers working the late-night shift.
You: "Hey, Dr. Joober, is that PBJ you're drinking tonight?"
Dr. Joober: "yeah."
You: "Rad, dude. Polish Bubble Juice."