Someone who claims to be enthusiastic about eating sushi and loving it, but it is completely ignorant towards eating any sushi other than 'California Rolls'. Generally speaking, a combo of 'sushi' and 'n00b'
'My friends eat sushi every week and only eat 3 california rolls. They are such sUUbs'
"Oh, I love sushi"
"Hey, that person is eating california rolls, he's such a sUUb"