Cyndi Lauper has an 18-year-old son named Declyn Wallace Thornton. But on the mic, he goes by Dex Lauper, the iced-out playboy who has it made before drinking age.
On his debut single “Wavy,” Dex opts not to follow his mother’s sugar-pop path and instead tries out some trap production Reazy Renegade (Ace Hood, K…