The Beatles’ legendary icon, Paul McCartney posted a recent photo on his official Instagram page and revealed a really little-known photo from good old days.

As you will see the photo below, Paul is brushing his teeth. According to the caption, this photo was taken by Linda McCartney.

Here is the caption of the photo:

“From the minute I met her and she took pictures, I just knew that I could trust her and that whatever she took I’d be comfortable with.

So you didn’t do anything, you didn’t really pose. I mean I was doing my teeth and the spittle was falling out, I just sort of turned around and she took the picture.” One of over 200 #Polaroid moments featured in ‘@lindamccartney #ThePolaroidDiaries@TASCHEN #FlashbackFriday #LindasPolaroids”

You can see the photo right below.

You can watch Paul’s interview from 1968 right below.