Jubilant Inverness manager Terry Butcher was stunned at his team's 6-3 win at Kilmarnock but suggested it may have emerged from an honest team talk.
Butcher said: "I don't know where that came from. We had the worst training session on Friday ever - a nightmare!
"We sat the players down and said, 'What system do you want to play?'
"They said they wanted to play 4-3-3, like last week. I said fine, we talked through it and it seemed to get everything out of our system."
But, as he acknowledged, everything went right for Inverness against Kilmarnock, especially in the second half.
Dean Shiels' opener for Kilmarnock against the run of play was cancelled out by a smart goal from Andrew Shinnie before half-time.
In the second half, though, Inverness cruised to a 5-1 lead, with Jonny Hayes, Gregory Tade and two from Shinnie putting the result beyond doubt.
Shiels scored from the spot to make it 5-2 then Tade scored his second before Paul Heffernan executed a fine left-foot finish to give Killie a third goal to end the scoring.
Butcher added: "I will probably let the boys pick the team in two weeks' time against Celtic. I think me and Maurice [Malpas, his assistant] will just go to the pub!
"They are a wonderful set of lads. There is not one player I don't get on with and don't want to see do well.
"We had a good team talk before the game today and we had a good night last night with the quiz.
"We enjoy going away together. That's why our away form has always been good. Perhaps I'll have to ask my chairman for more overnight stays on a Friday night."
Shinnie's terrific performance was rewarded with a hat-trick, and Butcher singled out the player for praise.
"Andy Shinnie had a marking job in midfield but he manages to run off his markers. He enjoys that role very much," he said of the 22-year-old Scot.
"He is improving, he is the most skilful player at the club, probably the best finisher, but he has not really got his just desserts when he has been in the box.
"But wow, he was just sensational. He's a wonderful player.
"He trains well, he works hard, he has fantastic vision, a fantastic touch and he is growing in confidence. It is just wonderful to have him in our team."