An alternate spelling of "Looser"
1. One that does not win, especially consistently
2. One who is incompetent or unable to succeed
<Bob> Dude i liek pwned u in CS yest0rday
<Greg> ZOMG, hell nahz, i got a 3 KD ratio and had 80/90 head shots n00b
<Bob> Oh, :'( i guess i'm a LUSR
<Greg> Yup... lawl