The Celtic midfielder fired home after just 12 seconds of the 4-3 thriller against Aberdeen, taking the record from teammate Anthony Stokes from his Hibernian days, and was surprised to have such luck so early in a match.
"It was crazy," Commons told Celtic's official website after setting the record of 12.2 seconds.
"First of all, Mikael (Lustig) played it up front, Hoops (Gary Hooper) got a flick on, I found myself in space on the edge of the box and Stokesy played a great ball through to me.
"I took one touch and smashed it in. It was one of those crazy things that usually never happen, I don't think half the fans were even in the stands yet. The manager wasn't even in the dugout so it was a bit of whirlwind.
"Aberdeen hadn't touched the ball yet but we play that way from kick-off, we go forward and try and put them under pressure in the opening couple of minutes.
"But for it all to fall into play and for me to have a shot on the edge of the 18-yard box was crazy luck.
"It beat Stokesy's record. He was telling me afterwards that he was sure I'd beat him so I think he's a little bit wounded now."