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2.
lulx is a further corruption of lol, resulting from misguided attempts to type "lulz"

lulx isn't hardcore just because of having an x, the hardcore definition simply being a backronym.
xXcrystalxmethXx: so yea he killed himself
Tom: LULX!!
xXcrystalxmethXx: lulx? thats so hardcore!
Tom: no.
Tom: i meant to type lulz you emo faggot.
by Captain Faceblack August 27, 2008
20 13
 
1.
like lulz, but hardcore
ME - "you should do that"
JO - "yeah, but I could get arrested"
ME - "yeah, but it would be funny. I could record it for the lulx"
by pasta?!PASTA?! March 15, 2008
35 23
 
3.
like lulz, but hardcore
ME - "you should do that"
JO - "yeah, but I could get arrested"
ME - "yeah, but it would be funny. I could record it for the lulx"
by pasta?!PASTA?! March 16, 2008
12 25