I am very subtle with the pax that are sitting next to me.

Pax: what do you do.
spots: I am a safety investigator
Pax: what industry
spots: This one.
Pax: what does that actually mean
spots: well I examine the safety of flights
Pax: does that mean you investigate accidents?
Spots: yes
Pax (nervous): what are you doing on this flight
Spots: Well I thought I would watch a crash from inside the plane this time and see if what they say about pax being frightened about jumping onto the slides when they see how far down it is can be true.

Pax: have you always wanted to be an accident investigator?
spots: no, I wanted to be a gigolo but I failed the oral entrance exam....

and so on...