au fait

"They're the kind of key points you try and pick up naturally, and the kinds of skills I've tried to pass on to my colleagues, who are less au fait with contact tracing."

"People are saying it's about learning on the job, these student nurses are not au fait with things. It's ridiculous. They are going to see horrific sights."

Beardsley was equally au fait, regularly taking the boat train to Paris.

I can hand on heart say I’m not au fait with that tradition.

If you are not au fait, then pimple popping is the trend for filming, up close and personal, the act of popping, squeezing or otherwise removing blackheads, cysts and other dermatological dementors.