In your face

The expression ‘in your face’ originated in the US in the 1970s. Many of the earliest citations relate to confrontations in sport, especially initially in basketball. The earliest use of the term in print that I can find is from Jackson and Rosen’s exploration of the US basketball scene Maverick: More Than a Game, 1975:

If the ball went in, they’d say, ‘In your face, mother.’
It’s just a display of raw ego power – one man forcing another to submit.

More recently the phrase has often been used to describe the nose-to-nose pre-fight confrontations between boxers.

‘In your face’ is a recent addition to a largish collection of phrases and sayings that we use about faces:

Face the music
About face
Lose face/save face
Cut off your nose to spite your face
The face that launched a thousand ships
Talk to the hand, cause the face ain’t listening