Not what you think. Get your mind out of the gutter.
I sent a friend the story about Wimbledon tennis balls being used as mouse homes “to encourage breeding in existing mouse strongholds” and received the following stream-of-consciousness reply, which I have reproduced here with his permission:
Mouse strongholds… Mouse strongholds. Strongholds of the Harvest Mouse… Strongholds… Strongholds. Fortifications. Mouse Held Territory. Major Mouse Offensive. Mouse Movements. Mouse Emplacements. Mouse Defenses. Mouse Forts…
Mouse Marines overran and took control of a woodchuck stronghold today….