Rappel - Technique of avoiding undesirable trail companions. Slack - In rock climbing, a specially designed trouser. Svea - An expletive associated with distasteful aspects of the wilderness experience. Switchback - An amusing trail game intended to startle the hiker following the player. Requires overhanging twigs, greenbrier vines, etc.
Any number can play.
This condition is, unfortunately, incurable and worsens as the activity increases. Trowel - A cry of anguish or warning. Understory - A modestly stated account of a hiking or climbing expedition in which actual wind speeds, temperatures, distances, etc. are reported accurately. Voyageur - A term of derision designating unattached males among coed hiking groups.