He said the tattoo took about four hours and never expected the extreme reaction.
"(My son) thought it was cool but I wasn't expecting it to go viral," the 36-year-old said.
"It's all gone a bit mad and my son has told my mum that I'm famous."
He said the tattoo started to hurt in the last hour.
"I think I was running out of adrenaline. You're supposed to fuel up on sugar before you have one done but all I'd eaten were a couple of burgers," he said.
Tattoo artist Richard Batey has seen a lot of things, but he told the Daily Mail this tattoo was one of a kind.
"It's the first of its kind in the world," he said.
"I have a good mechanical understanding from working in the car industry.
"When Kenny came in he was up for having this done as a chest piece. The result is just the start. There's a long way to go.
"It has 1.1 million views and 2 million likes on Facebook - and it isn't even finished yet.
"It's what I'd call an interactive tattoo and it's more of a shocker than anything else.
"It's got the ability to make an entire room of people smile and laugh and get them talking."