Hollywood Undead is a band whose music has been described as a mixture of hip hop, emo and metal. The band originated in 2005.
HU4L = Hollywood Undead 4(for) Life.
Man, i'm going to see HU tonight down at the dome.
cyber/text language for 'hate you for life'
person 1: "sori man i jst dnted ur car :( "
person 2: "omg r u bein serious?! HU4L!!"