HugMon
Reading between the lines here, I think Moley was being a bit 'Tongue-in-Cheek'. I doubt he is suggesting either of the two characters & the suitcase would make it onto the aircraft.
The thread is about relatives on the cockpit jump seat.What I see here is a suggestion that you may not know anything about your fellow flight deck companion, and innocently invite a less than desirable, unwittingly, onto the flight deck.