During his recent gig at Dublin's Vicar Street as part of his set of shows across November, December and January, Moore did not hold back.
"I'd like to apologise to anybody sitting near to those wa**kers on the balcony there", he told the audience.
"I don't know if you can hear me, but I can hear you all night. Get your money back and fu**k off!".
Check out the footage here.
This response was met with a huge round of applause from the rest of the audience. Clearly Moore was not the only one annoyed by the heckler's presence.
One fan wrote this.
