| Idiom | Meaning | Example | 
| bully for you | 
you were lucky, good for you
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When I beat Ed at cribbage, he says, "Bully for you!"
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| bum | 
buttocks, backside, butt, rear end
 | 
"Why did she slap your face?" "Because I pinched her bum."
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| bum rap | 
(See a bum rap)
 | 
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| bum's rush | 
(See the bum's rush)
 | 
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| bummer | 
(See a bummer)
 | 
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| bump and grind (hockey) | 
bump other players and work to get the puck
 | 
To win hockey games we need players who bump and grind.
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| bump and grind | 
walk or dance in a sexy way
 | 
A seminude dancer was bumping and grinding under red lights.
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| bump into | 
meet by chance, run into
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Do you know who I bumped    into yesterday? Larry Mason.
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| bumper to bumper | 
a lane of vehicles with the bumpers nearly touching
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Traffic on Memorial Drive was bumper to bumper at 4:30 today.
 | 
| bun in the oven | 
(See a bun in the oven)
 | 
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