"It was like slow motion really," he laughed.
"I put it in the net and did not know what to do. I couldn't remember how to celebrate because I had not scored for so long.
"But with the rain, it was the perfect weather for doing a slide, so that is what I went for."
When you first start to list them, starting with 10 titles, he looks slightly embarrassed, by the time you complete them, a record-equalling 758th Manchester United appearance and a goal, his 144th, to confirm the Red Devils' status as England's undisputed number one, he acknowledges it is impossible to play down.
"I am not going to play it down, I can't really," he said. "To equal someone like Sir Bobby Charlton is special.
"He is the embodiment of everything that Manchester United stands for. He has been watching me since I was 13 playing for Salford Boys and has seen me come through the youth team.
"To be level with someone like that, and win the championship and score a goal is fantastic."
But, ever the professional, Giggs allowed himself just the briefest of celebrations - at last night's player of the year function in front of hordes of adoring fans at Old Trafford - before focusing on the next challenge; beating Chelsea in the Champions League final.
"It has to be that way," he said. "You can't look back, you have to look forward."