Generally - the natural occurrence of facial hair, also known as a beard, which tends to grow on a man's face, if he chooses not to shave for an extended period of time.
Specifically - Jake Gyllenhaal's beard.

Etymology:

The term face pet was first coined by "lemniscate", on September 29th 2010, when posting on the popular Jake Gyllenhaal fan blog called Wet Dark And Wild.
The word combination face pet was engendered in reference to:
1) the tendency men have to subconsciously stroke and touch their face and/or facial hair; often a form of auto-erotic touching when flirting to indicate they're interested
2) the health benefits discovered by researchers at the University of Warwick with regards to stroking or playing with one's pet
Jake gently strokes his face pet whilst staring into the distance, lost in a wistful gaze.
by Razzmatazz101 January 31, 2012
Get the face pet mug.
to stroke someones face in order to cool their fears and soothe their mood
As Clyde faded out of consciousness in the arms of Mary we all knew that the face pet she was applying would have no effect in this dire situation.
by provider44 January 17, 2010
Get the face pet mug.
When you put a XTC-pill or another pill containing the substanceMDMA” in someones mouth without him wanting this.
Hey ah baf man gaffi gaffi North Face pet.

Nooooo man die guy is al fucktop genoeg en heb geen zin in gezeik met wouten
by 420xxxAchmedxxx360 July 16, 2019
Get the Ah baf man gaffi gaffi North Face pet mug.