In Colombia we use it as a synonym for itching, itching, tingling, itching. It is a very common form of theft on buses for transport public, consisting of rummage the pockets of the victim, taking advantage of the grip of the users.
Tickling: ( colloquial ) Form of theft in which a group of thieves acting together, and in a tumult, while some squeeze his victim, others introduce hands in pockets, bags, briefcases, etc., to steal their belongings and money.