Sitting in the same seat each time means innocent interlopers can expect to receive covert glares

Silence is appreciated and eyebrows are raised at excessively loud conversations

Changes in services can cause confusion, tears and general upset

Pentecostalism provides good training for strap-hanging and conversely hanging onto a rail on a packed train allows for sneaky praise and worship actions

Passive occupations (reading, gentle snoozing) are acceptable. Making notes or drawings is sometimes frowned upon

Prayer for the journey is essential.

With thanks to Twitter… AlisonMcNab; TheAlethiophile; edaross; bigdaddywhale