"Hey Sally! What did your boyfriend give you for your anniversary?"
"He's the greatest! He gave me Hepatitis C!"
"Oh, what a sweetheart! You're so lucky..."
You just *know* some smart aleck boyfriend/husband out there is planning to give those to his lady with a similar joke in mind...
...and you just *know* she won't think it's funny.
Hope he's got a comfy couch!