Originally Posted by rkt10
When we were kids we took the local trains between our town and South Station in Boston. While waiting for our train to head home we would pretend we were detectives and follow a passenger around. If the passenger noticed us, we would pretend to veer off. We thought it was a riot.
I would have no problem doing this
outside of the USA however I'd be very cautious if doing this - ESPECIALLY in an airport. People are jumpy and on edge due to the media hyped terrorism threats, and being followed - even by kids - may not be what they want. You're likely to find a nice chat from airline staff or TSA forthcoming.