Ne-Yo dealt with grown-person business during a concert in Japan.

Video footage showed Ne-Yo getting upset when a fan jumped onstage during his show.

Ne-Yo remained professional during the incident, continuing his performance while the fan danced up to him.

As the fan approached, Ne-Yo grabbed the fan by the back of the neck and pushed him off stage with the help of security.

Ne-Yo reposted the video on his Instagram, saying, “This is what you DON’T do. I’m a gentleman, but I WILL slap the s— out of a person disrespecting my stage.”

He added, “Don’t try me. All love, til it’s not.”