We talked about this last year, but recent events indicate you need a refresher lesson.
The following are photos of poison ivy. Please study them.
Now, Boyz, I know sometimes you are not keen on me hugging and smooching you. It's a Mom thing — I can't resist. Since you are spoiled rotten, I feel you should be a bit more tolerant, if not entirely indulgent of my PDAs.
Please avoid these plants so that I can avoid looking like this: