A nickname given to the lead singer of Panic! At the Disco, Brendon Urie. Fans often call Brendon "Beebo" or "Breadbin". Sometimes used as sarcasm using the name "Breadbin Urine."
I love Breadbin, I can't wait to see him at the Panic! concert tonight!
OmG brEadbiN urInE is a fUckinG rAt!1!1! hE useS autotuNe anD can'T sinG weLL!1! whY do pEopLe likE hiM?1?1!! (sarcasm)
"Bredrin" is the Rastafarian subdialect word for Brethren. With original religious implications, the word later took on the Bible definition of "brother". Hence, one who shares a common ancestry, allegiance, character, or purpose with another.