A gauntlet dock is a "dock that is also a gauntlet." A dock is a platform built out from the shore into the water and a gauntlet is a weapon and obstacle covered challenge. Finn and Jake started to create this one in the episode "Business Time" over Iceberg Lake. It was originally a very poorly built dock consisting of planks of wood loosely connected by rope. It only had two medieval flails, a sawblade, and an axe on it before the Businessmen renovated it. Finn was originally reluctant to let the Businessmen work on the dock, but Jake (being lazy) convinced him to hire the Businessmen. The purpose of the gauntlet dock was possibly to train, and possibly for enjoyment. It is still there in "Mortal Folly."