Ahead of the Lions' game against the Wellington Hurricanes, which ended with the same drawn outcome as the final Test, Gatland was depicted on the front of one newspaper as a clown.
So after his side secured a famous series draw against the All Blacks he decided to mock some of the New Zealand media who ferociously criticised him during the tour.
Gatland said: “It was my idea. I actually had it last week, but I didn’t think it was the right time.
“Drawing the series is a fantastic achievement after the way we were written off. These players have shown unbelievable character.
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“New Zealand's hospitality has been fantastic and there's been nothing but good will from people. The atmosphere tonight makes it so unique.
"We realised we had to build a few bridges from 2005 and I feel we have done that. It has been a great series."