[blue in the face] {adj. phr.}, {informal} Very angry or upset; […]

[blue Monday] {n.} A Monday when you have to work after […]

[blue-pencil] {v.} To edit. * /The editor blue-penciled John's manuscript./

[bluff] See: [CALL ONE'S BLUFF].

[blurt out] {v. phr.} To suddenly say something even if one […]

[blush] See: [AT FIRST BLUSH].

[BNOL] "Be nice or leave"

[Bo-Peep] Sleep (rhyming slang).

[board] See: [ACROSS THE BOARD], [COLLEGE BOARDS], [GO BY THE BOARD] […]

[boat] See: [BURN ONE'S BRIDGES] also [BURN ONE'S BOATS], [IN THE […]