The more I think about it, the more sure I am that it actually was Mel Gibson that bought my wine.

Just googled his height and that sealed the deal.

For the uninitiated: I nice guy came up to taste my wine, we got talking, he bought wine and at the end I realized and asked "Does anyone ever say that you look like Mel Gibson?" He said "Not today" and got outta there.

Ain't no doubt in my mind.
It had to be him.

https://m.primal.net/KBJm.jpg