By speaking with a faux southern accent?
charlatan noun
char·la·tan | \ ˈshär-lə-tən \
Definition of charlatan
1 : QUACK entry 4 sense 2
charlatans harming their patients with dubious procedures
2 : one making usually showy pretenses to knowledge or ability : FRAUD, FAKER
a charlatan willing to do and say virtually anything to remain in the spotlight
— Alan Brinkley