She says, "It’s a passion in our family," and she's talking about RIDING MOTORCYCLES!
Yes. I’ve been riding my own for 16 or so years now. I’ve had triumphs, Harley’s and Indian motorcycles and have ridden all over the world. I grew up on the back of my dads bike. First accident at 9 years old. It’s a passion in our family. https://t.co/4LQMNf7xZj— P!nk (@Pink) August 21, 2018
In fact, it looks like she's taking up motorcycle ridership among women as a cause of sorts:
I suppose being on a motorcycle with a helmet on is one way for her to have a bit of fun out in public without being recognized (and hassled) by fans.
Here's a pic her hubby shared from a recent ride: