Luke is a rambunctious, playful, mischievous, and immature boy who is often doing his own thing. He is also known for having low intelligence, which he has supposedly inherited from his father, who is not very smart either. This gives him innocence and leads him to not always understand the repercussions of his actions, which is clearly shown in "Coal Digger" when he announces at a family gathering that his mother thought Gloria was a gold digger, although he heard this as "Coal Digger". He is also thought to be a bit vacuous, because of many questionable actions, such as getting his head stuck in the banister and jumping on the trampoline wearing only underwear and a box on his head. Like his father, he is believed to have ADHD, as he repeatedly becomes distracted when he has to do something important. He is easily annoyed when people show intelligence: Whenever Manny says something with long words, he says 'You're making it lame again!'.
Coal Digger This marks the first interaction between the two, when they get into a fight at school, because Manny refers to Luke as "his nephew" in front of his friends, which he dislikes and is embarrassed about. Later on they dispute the situation and realise they were stupid for fighting, Luke then states what he was joking his step-uncle about: Luke was joking Manny about how his mother is a gold digger, which is something he heard his mother call Gloria, however he hears this as "coal digger", which raises suspscion for Gloria as to whether Claire really likes her.
A pop rap song, "Gold Digger" samples Ray Charles's "I Got a Woman" (1954), mainly the line "she give me money when I'm in need". Lyrically, Foxx sets the stage by detailing how he was taken by a gold digger; West sings/raps in each verse about the behaviors and characteristics of a gold digger yet playfully refuses to call the woman in question as such outright. The song received widespread acclaim from music critics, who often praised the composition. Some complimented the lyrical content and Foxx's feature, while a few critics highlighted the sample. The song was named to year-end lists for 2005 by multiple publications, including Eye Weekly and NME. Numerous outlets have placed it on retrospective lists, such as VH1 and Rolling Stone. At the 48th Annual Grammy Awards, the song won Best Rap Solo Performance and also received a nomination for Record of the Year. 2b1af7f3a8