"Jigga What / Faint" is a mashup of two songs, one by Jay-Z and the other by Linkin Park. The lyrics are about feelings of frustration and insecurity, and the desire to be heard and taken seriously.
In Jay-Z's verse, he talks about how people want to act tough and talk to police, but he's not about that life. He's focused on making money through selling drugs and rapping. He also brags about his sexual prowess and the power he has over the women he's involved with.
In Mike Shinoda's verse, he talks about his own insecurities and frustrations, about feeling like he's not being heard or understood. He wants the person he's addressing to listen to him and take him seriously, but feels like he's constantly being ignored.
The chorus, sung by Chester Bennington, echoes this sentiment of feeling ignored and not being able to move on from past hurts. Despite the pain, he pleads with the person not to turn their back on him and to listen to what he has to say.
Overall, "Jigga What / Faint" is a raw and emotional depiction of the struggles of modern life, and the need for validation and acknowledgement from others.