(n.)
Corridor etiquette demands that once a corriedoo (q.v.) has been declared, corrievorrie must be employed. Both protagonists must now embellish their approach with an embarrassing combination of waving, grinning, making idiot faces, doing pirate impressions, and wagging the head from side to side while holding the other person's eyes as the smile drips off their face, until, with great relief, they pass each other.