Do it once, and it’s a careless slip.
Do it twice, and it’s a bad habit.
Do it three times, and it’s a tradition.
Any or all of the following may be involved:
- Eating (including a variety of nibbles, mince pies, and egg-free,
- Drinking (including mulled wine, non-alcoholic punch)
- Making merry (obligatory)
- Playing silly games
- Talking nonsense
The afternoon is likely to be biased towards our brethren of smaller stature (children, goblins, bonobos, etc), with the evening being less so (adults, trolls, the larger primates).
RSVPing, while not strictly necessary, would help us to order the correct order of magnitude of food.