Spacer Customs

Customs among Human spacers are fairly rigid and long-lasting.

Hamsters: The ideal pets for spacecraft, they eat little, have very little mass, do not become confused by zero gee, and breed prolifically. Since the very early days of interstellar flight, no starship has been without a ship's hamster.
Bars: Leave any spaceport, on planet or settlement, and turn left. Soon you will come to a spacer's bar.
Hospitality: Traditionally, a spacer inviting someone aboard his/her ship offers customary hospitality of "ship and stores and bunk" -- that is, transportation, food, and sex. It is up to the visitor to accept one, two, or all three.
Aggressiveness: Through long generations of selection and breeding, those who cannot "turn off" their aggressive instincts were weeded out of the spacer gene pool (usually by fatal accident or seemingly-accidental execution.) When spacers fight (which they often do for exercise, or just fun), the loser signals surrender by relaxing and baring his/her neck and underbelly to the victor. Just as with higher animals, this display short-circuits the victor's aggressiveness -- the usual response is a kiss on the forehead, followed by hearty laughter.