Hi Racedo -
The stuff DID belong to a third party (the student who had asked me to bring it on the flight) and I WAS carrying it on. Hence what I "know well" is that the only legitimate answer to the security question put to me was: "YES!"
Why do you presume to second-guess me about the composition of my own luggage? Do you suggest lying when asked the security questions? Maybe that is what you do?
SHED.