The second verse talks about Zack hanging out with his friends at a frat party being peer pressured into using a drug which causes his eyes to roll into his skull and make his back look like the McDonald's arches.
The second verse talks about 21-year-old Zach hanging out with his friends at a frat party. He succumbs to peer pressure and uses ecstasy which causes his eyes to roll into his skull and make his back look like the McDonald's arches.