What have Brussel sprouts and pubic hair got in common

A lady goes to the doctor..
And the doctor prescribes testosterone. The lady was like, "Testosterone? That's a male hormone. Won't there be side effects?"

The doctor assures her that for her condition it's the right drug and the side effects will be minimal.

So she says okay, goes home and starts taking it. A few weeks later she goes back for a follow up.

She says to the doc: "I think you've given me too much testosterone. I'm having bad side effects."

"Like what?" asks the doc.

"Well, for one thing, I'm sprouting hair where there isn't supposed to be hair."

The doctor smiles and says: "Oh, that's very common. It's no big deal. Where are you sprouting hair? On your upper lip?"

"No," the lady says. "On my balls."