Hey all,
Found this while browsing a image sharing site. I figured you all would get a kick out of it. Especially comment 2 below.
http://m.imgur.com/gallery/HsAO9Rrt
Sounds like a lovely scavenger hunt each time :)
I am the same way. Depends on the day, the place and my mood. Tickling is controls by the brain, so tons of factors can influence ticklishness.
I have also done this in the past. There is a comment box. So i usually write something ridiculous. Please draw batman riding a unicorn. Up in my college, there was a bunch of students that worked there. They used to draw the items on occasion on the inside cover of the box.