The Yellowfruit Skin option isn't an error - it's a joke. The author is referring back to old slapstick sketches where a banana skin placed on the ground would invariably cause the unwary to slip and fall over. If the rules of old slapstick sketches worked in Fighting Fantasy books, it would be a useful (and amusing) item to have at this point. However, the author concedes in the text that the player doesn't have the item, as choosing the option to produce it doesn't lead to the player retrieving it from their pack (as is usual) but sees them suffer the consequences of looking for an item they cannot possibly have. Thus it's intended as a gag (presumably to help up the paragraph count to a nice round 800) rather than an error. 86.188.100.225 18:11, August 18, 2019 (UTC)Wilf.