“We went and got a few injections. It was something stupid friends do on the drink and right now you are seeing the back end of that on my forehead. It is a juvenile boys’ story,” he laughingly confessed.
The 44-year-old father of four also addressed persistent accusations that he and Sophie Monk have already split up.
“Realistically, in simple terms I have been dating Soph for a couple of months,” he said.
“What sort of couple who have been dating that long get asked walking down the street about kids, marriage, the future? It is very early days. There are no future plans, we are just a couple starting out in a relationship and very happy with each other. It is a pressure cooker. You need a little perspective.
“At the moment we are living in Sydney in a hotel and next week I think we are going to the Gold Coast.”
The ex-playboy also addressed the reality couple’s now infamously awkward appearance on The Project last month, blaming their frosty banter on an exhausting media schedule.
“We were up at 4am that day. Before we went on The Project they ran through (runner-up) Jarrod being bloopered on the show, then a prerecorded interview about his heart being smashed to smithereens and then we get thrown straight into the live show.
“It just felt like we were being thrown to the lions and I know Sophie was extremely upset for poor Jarrod, she is such a decent human being. I know it is part of the show but it is heartbreaking to see someone come second so we weren’t in high spirits.”
Plus, Laundy felt panellist Meshel Laurie took a number of cheap shots.
“Pretty much off the get-go, that woman shot me down. She talked about what Sophie was looking for and then basically said on live TV how completely wrong I am.
“It didn’t seem very nice to me.”
Stu also opened up about his stay in a treatment centre for stress, anxiety and anger management following the breakdown of his marriage to ex-wife Rachel in 2013.
“She (Rachel) asked me, for the sake of our marriage, to go to a facility,” he recalled of the treatment that gave him “some pretty handy building blocks” in life.
“The facility had all sorts but for me it was a mixture of stress and anger management. I am not really an angry guy but we had a testing three years prior, heavy workload and work commitments for me and, I guess, a stressful marriage, young children, for me it was more depression when I was inside.”
He continued: “I absolutely suffered depression. I am far from perfect. The stupid, funny situations I’ve found myself in life, I am a little bit the clown of the family and the mischief I get myself up to is good for laughs. I am a work in progress, there’s no doubt about it.”