Mine came in the form of an oblivious father and bratty daughter last October.
I was waiting in line to ride KS by myself, minding my own business, when next thing I know something is poking me in the butt. And I mean poking me IN the butt. Thinking I had leaned too close to one of the rails and it had a plant or some kind of vegetation growing over it, I didn't freak out right away. That is until I looked down and saw this little girl (maybe 5 or 6) looking up at me.
Now the first thing I usually do when something awkward with a child happens is try to locate their parents. I see this man in front of us (and I honestly can't remember who else was with him. Maybe his wife and the little girl's grandparents?) grinning at her. Next thing I know she's bouncing her hand on my butt. I look at the father again and he says to me, "She does this all the time. It is like her thing."

SERIOUSLY?!
Behind me there was a couple around my age (25ish) who are staring at the little girl and the father in disbelief about what he just said to me. I struck up conversation with them and the next thing we knew, little miss butt poker was attached to the man's leg. The father is still watching the poker and says to us, "That's Paris. We names her after the city, not the bimbo."
At this point my mouth was just hanging open. I continued to watch Paris torment other guests waiting in line while her father laughed and smiled about every little thing she did. Ripping apart plants, poking other people's butts, you name it, she did it.
When it came to the part in the line where you decide to go left or right, I let people get in front of me so I could distance myself from Paris and take the opposite line she and her father took.
I remember calling my BF later in the day and telling him "The Story of Paris" while he listened in horror. His closing words were, "Paris may have been named after the city, but with the amount of great parenting she's getting, she may just grow up to be just like the bimbo."