A little indecent / WARNING!

I am probably prudish, but... this happened in the flower shop when I asked about a plant I did not recognize. 
It is called XX, said the shop keeper. 
Really? I wondered and blushed a little. Is that really the right name? I asked, I could not believe my ears. 
What made me blush? 
I hardly want to translate the name into English. I have not found the correct name, but freely translated it is..... You are hereby warned..... 
The Pope's balls.  
I warned you!