B1FF
B5
back door
backbone cabal
backbone site
backgammon
background
backreference
backronym
backward combatability
BAD
Bad and Wrong
Bad Thing
bag on the side
bagbiter
bagbiting
baggy pantsing
balloonian variable
bamf
banana problem
bandwidth
bang
bang on
bang path
banner
banner ad
banner site
bar
bare metal
barf
barfmail
barfulation
barfulous
barn
barney
baroque
BASIC
batbelt
batch
bathtub curve
Batman factor
baud
baz
bazaar
bboard
BBS
BCPL
BDFL
beam
beanie key
beep
Befunge
beige toaster
bells and whistles
bells whistles and gongs
benchmark
Berkeley Quality Software
Berzerkeley
beta
BFI
BI
bible
BiCapitalization
biff
big iron
Big Red Switch
Big Room
big win
big-endian
bignum
bigot
bikeshedding
binary four
bit
bit bang
bit bashing
bit bucket
bit decay
bit rot
bit twiddling
bit-paired keyboard
bitblt
bits
bitty box
bixie
black art
black hat
black hole
black magic
Black Screen of Death
blammo
blargh
blast
blat
bletch
bletcherous
blinkenlights
blit
blitter
blivet
bloatware
BLOB
block
blog
Bloggs Family
blogosphere
blogrolling
blow an EPROM
blow away
blow out
blow past
blow up
BLT
blue box
Blue Glue
blue goo
Blue Screen of Death
blue wire
blurgle
BNF
boa
board
boat anchor
bob
bodge
BOF
BOFH
bogo-sort
bogometer
BogoMIPS
bogon
bogon filter
bogon flux
bogosity
bogotify
bogue out
bogus
Bohr bug
boink
bomb
bondage-and-discipline language
bonk/oif
book titles
boot
Borg
borken
bot
bottom feeder
bottom-post
bottom-up implementation
bounce
bounce message
boustrophedon
box
boxed comments
boxen
boxology
bozotic
brain dump
brain fart
brain-damaged
brain-dead
braino
brainwidth
bread crumbs
break
break-even point
breath-of-life packet
breedle
Breidbart Index
brick
bricktext
bring X to its knees
brittle
broadcast storm
broken
broken arrow
broken-ring network
BrokenWindows
broket
Brooks's Law
brown-paper-bag bug
browser
BRS
brute force
brute force and ignorance
BSD
BSOD
BUAF
BUAG
bubble sort
bucky bits
buffer chuck
buffer overflow
bug
bug-compatible
bug-for-bug compatible
bug-of-the-month club
bulletproof
bullschildt
bump
burble
buried treasure
burn a CD
burn-in period
burst page
busy-wait
buzz
buzzword-compliant
BWQ
by hand
byte
byte sex
bytesexual
Bzzzt! Wrong.