Booby Traps and stuff
Blackadder: Now, where the hell are we?George: Well, it's difficult to say, we appear to have crawled
into an area marked with mushrooms.
Blackadder: [patiently] What do those symbols denote?
George: Pfff. That we're in a field of mushrooms?
Blackadder: Lieutenant, that is a military map, it is unlikely to list
interesting flora and fungi. Look at the key and you'll
discover that those mushrooms aren't for picking.
George: Good Lord, you're quite right sir, it says "mine". So,
these mushrooms must belong to the man who made the map.
Blackadder: Either that, or we're in the middle of a mine-field.
Baldrick: Oh dear.
George: So, he owns the field as well?