The pop singer proves at his show in Charlotte that he can dance, that he can be a goofball, and that at this point, he can make jokes about his age.

Ink this into your weekend plans — the Blood and Ink Tattoo & Horror Convention returns to White Plains Friday, Nov. 15 at 3 p.m.

I’m thinking about some tattoos,” he told The Post Thursday night, hours before the showdown with Paul, 27, adding: “I think ...