It is important to note that "The Party Rock Crew (Reprise)" is a mash-up of various popular songs, so the meaning of the lyrics may not relate to each other directly. The song starts with Weezer's "Island in the Sun," which talks about being on vacation and enjoying life without any worries. The chorus's lyrics suggest running away with someone special and spending time with them forever.

The second verse, performed by LMFAO and Weezer, talks about partying and letting loose. The lyrics are about enjoying life and having a good time, with the hope of making everyone lose their mind by having fun.

Smash Mouth's verse talks about being a star and shining bright. The chorus repeats, with Weezer's verses about running away with someone, while DNCE's verse talks about indulging in sweet cravings and going crazy.

Eminem's verse, which is a part of his song "The Real Slim Shady," talks about him being the real Slim Shady and asking the imitators to stand up, highlighting his individuality as an artist. The song ends with Eminem acknowledging that there is a little bit of Slim Shady in all of us.

Overall, the song's meaning revolves around enjoying life, having fun, and being yourself without any worries. The lyrics suggest that life is short, so it is important to indulge in your desires, let loose, and be happy.