| better for it | | | |
| better luck next time | | | |
| better nature | | | |
| better place | | | |
| better than sex | | | |
| bet the farm | | | |
| bet the house | | | |
| bet the ranch | | | |
| between a rock and a hard place | | | |
| between Scylla and Charybdis | | | |
| between the devil and the deep blue sea | | | |
| between the hammer and the anvil | | | |
| between the jigs and the reels | | | |
| between the pipes | | | |
| between you, me, and the bedpost | | | |
| betwixt and between | | | |
| beyond a shadow of a doubt | | | |
| beyond one's pay grade | | | |
| beyond one's years | | | |
| beyond the black stump | | | |
| beyond the pale | | | |
| bide one's time | | | |
| big boy | | | |
| big boys | | | |
| big break | | | |
| big bucks | | | |
| big cheese | | | |
| big deal | | | |
| big dick energy | | | |
| big end of town | | | |
| big fat | | | |
| big fish | | | |
| big fish in a small pond | | | |
| bigger fish to fry | | | |
| big girl | | | |
| big gun | | | |
| big hand | | | |
| big head | | | |
| big kahuna | | | |
| big mad | | | |
| big money | | | |
| big mouth | | | |
| big name | | | |
| big ol' | | | |
| big old | | | |
| big ole | | | |
| big picture | | | |
| big screen | | | |
| big shop | | | |
| big shot | | | |
| big sleep | | | |
| big spender | | | |
| big talk | | | |
| big tamale | | | |
| big tent | | | |
| big wheel | | | |
| bill of goods | | | |
| bio queen | | | |
| bird in the bosom | | | |
| bird of ill omen | | | |
| bird of one's own brain | | | |
| birds and bees | | | |
| bird's-eye view | | | |
| birds of a feather | | | |
| birds of a feather flock together | | | |
| birthday suit | | | |
| birthday-suited | | | |
| bit by a barn mouse | | | |
| bitch | | | |
| bitch and moan | | | |
| bitch goddess | | | |
| bite me | | | |
| bite my ass | | | |
| bite my shiny metal ass | | | |
| bite off | | | |
| bite off more than one can chew | | | |
| bite of the cherry | | | |
| bite of the reality sandwich | | | |
| bite one's lip | | | |
| bite one's nails | | | |
| bite one's tongue | | | |
| bite someone's hand off | | | |
| bite someone's head off | | | |
| bite the big one | | | |
| bite the biscuit | | | |
| bite the bullet | | | |
| bite the curb | | | |
| bite the dust | | | |
| bite the hand that feeds one | | | |
| bite to eat | | | |
| bits and bobs | | | |
| bitter end | | | |
| black and white | | | |
| black-and-white | | | |
| black babies | | | |
| black day | | | |
| black gold | | | |
| black mark | | | |
| black over Bill's mother's | | | |
| black oxide | | | |