But whatever anyone thinks of him, Dapper is a very modern media phenomenon.
Who is O'Reilly? He's originally from Woking in Surrey, and spent some years performing on cruise ships. These are early publicity shots from his professional showbiz profile.
His biog says: "I’m a presenter / actor / comedian / model, most of my initial experience has been on cruise ships where I perfected the art of presenting cheesy game shows and performing in my own stand up comedy show 'the life of Reilly'.
"I have done professional modelling and acting in a movie, I enjoy stand up performing and writing. I’m an out going “cheeky cockney chappie” type, very comical and playful, professional and quick witted."
His profile also mentions that he attended Brooklands Performing Arts School from 2000 to 2002 and has done warm-up gigs for Paul Daniels, among others, and appeared in a short film.
He may well be a word-of-mouth, social-media success story, but his roots are in traditional showbiz much more than people may think.
And to top it all, Dapper is headed for the mainstream. He's hosting a new show on ITV2 called On the Pull.
In 2014 he started to do Vines featuring famous people, including Louis Walsh, filmmaker and actor Noel Clarke, Ashley Cole, and Hollywood star Terry Crews.
He has his supporters, but not everyone is a fan.
Established comedians trying to make a living from comedy weren't impressed by the speed with which he was offered a TV show.
This was Radio Times' brutal summation of the Dapper Laughs phenomenon.
But it doesn't really matter what critics think – he's proven he can build an audience without the kind of critical support, and some would say hard work, that many comedians rely on.
His fans see Dapper as a loveable rogue who pushes the boundaries of what's acceptable – like a homemade Leigh Francis, who has for more than a decade played the lethario character Keith Lemon in Celebrity Juice, which feels tired and outdated in comparison.
He's a "lad" that attracts young women to his shows (his management told us the gender split in his followers is 50:50) and makes people laugh by saying out loud the kind of thing they would only say in front of their best friends on a boozy night out.
In a sense, this is the subculture of Vine breaking free and being let loose on an unsuspecting mainstream live and TV audience. But in another this is mainstream entertainment borrowing from the "lad" subculture that has seen The LAD Bible grow to 3.4 million Facebook fans and stag dos become a multi-million-pound international industry.
Dapper Laughs exists because a TV executive or a marketing guru could not have invented him.
We originally said that the line from Forrest Gump was from a black character, but in the film it's said by Forrest Gump, who is white.