I can't 'turn off' my reaction to being tickled - which is generally flailing limbs (look out, you might get kicked, hard), gasping and screaming. I do not like being tickled at all and am very ticklish. When I was a child and people would tickle me I would hyperventilate and cry. There's just something about it I hate, a lot.
I don't mean a little affectionate 2 second tickle, but sustained, torture-tickling. Yuuuuuuck.