Loaner gear
Loaner Gear is SCA slang for weapons and armour which are communally owned by a group for the purpose of lending them to fighters who lack their own equipment. Loaner gear usually consists of "hand-me-downs" from fighters who have replaced temporary or aging armour with better quality equipment, and as such is generally ill-fitting, in poor condition and smells bad. On the other hand, many a fledgling fighter has been very grateful to his barony's loaner gear, as it meant he could learn to fight without having to lay out a lot of money for his own armour.
The "loaner jockstrap" should be avoided at all costs, however, and is generally only included in a stash of loaner gear as a joke.
SCA fighters are not supposed to authorize in loaner gear, but it has been known to happen.