Juan Mata shares cringe childhood throwback snap of David De Gea

David de Gea obviously never learned the first rule of having mates: Never let them see your family photos.

NEVER.

And the Manchester United keeper has paid the price after teammate Juan Mata decide to share a throwback snap.

Fortunately for the rest of us he decided to do so in a very public way - with his four million Instagram followers.

https://www.instagram.com/p/BMhOKP_Agi4/

Juan posted the snap of Ge Gea looking convincingly like MaCaulay Culkin circa Home Alone 2, yesterday as a bizarre birthday present.

Adding the comments: “Happy birthday @d_degeaofficial. Time flies??”

Mata clearly sees the funny side.

We're not sure De Gea will.