L

lag
lamer
LAN party
language lawyer
languages of choice
LART
larval stage
lase
laser chicken
leaf site
leak
leaky heap
leapfrog attack
leech
leech mode
legal
legalese
lenna
LER
LERP
let the smoke out
letterbomb
lexer
life
Life is hard
light pipe
lightweight
like kicking dead whales down the beach
like nailing jelly to a tree
line 666
line eater, the
line noise
linearithmic
link farm
link rot
link-dead
lint
Lintel
Linus
Linux
lion food
Lions Book
LISP
list-bomb
lithium lick
little-endian
live
live data
Live Free Or Die!
livelock
liveware
lobotomy
locals, the
locked and loaded
locked up
logic bomb
logical
loop through
loose bytes
lord high fixer
lose
lose lose
loser
losing
loss
lossage
lossy
lost in the noise
lost in the underflow
lots of MIPS but no I/O
low-bandwidth
Lubarsky's Law of Cybernetic Entomology
Lumber Cartel
lunatic fringe
lurker
luser