Weapon/object duality is a game concept that would appear to be a glitch in the Problem Sleuth adventure whereby all weapons have an innocuous double, switching back and forth between the two forms seemingly at random. Interestingly, the object and the weapon may have large differences in their degree of encumbrance. Bizarrely, they often do not, the hairpin being heavy enough to break the glass in the skylight. Pumpkins also seem to have this effect in jailbreak, though their innocuous double is nothing (or air).

Originally, the effect would be triggered whenever the object was named (You would have a Gun if you called it a Key, and vice-versa). This later changed to whatever was funnier at the moment.

During the Midnight Crew Intermission, Clubs Deuce acknowledges this gag by mentioning how he can never remember which one of his weapon/object "cards" to pick up. It appears that every card will have a double. Furthermore, when Spades Slick takes out his deck of cards, it appears as a large spiked chest instead. Interestingly, the chest contains some of his possessions... including another deck of cards.

In Hivebent, Kanaya Maryam has a Chainsaw/Lipstick, but it appears to collapse or expand mechanically from one object into the other. This oddly achieves the same effect as the duality seen in Problem Sleuth without any "glitch" occurring. Her chainsaw/lipstick appears to be designed to transform rather than doing so for no apparent reason such as in Problem Sleuth and the Midnight Crew Intermission.

Later on in Homestuck: Intermission 2 it's revealed that Lord English's CAIRO OVERCOAT turns into an Egyptian Sarcophagus, which is a play on gangster slang for coffin: "Chicago Overcoat".

In the post-Scratch Homestuck, Jane Crocker also owns a spoon that on 11/11/11 11:11 switches into a fork, and from then on is able to switch between the spoon and the fork.

Contents 1 Problem Sleuth 2 Midnight Crew Intermission 3 Hivebent 4 Homestuck: Intermission 2 5 Homestuck: Act 6 Intermission 2

Problem SleuthEdit
Weapon	Innocuous Double
Gun	Key
Tommy Gun	Ring of Keys
Machine Gun	Hairpin
Knife	Teddy Bear
Stun Gun	Paint Roller
Flame Thrower	Paint Stripper
Sniper Rifle	Sextant
Brass Knuckles	Megaton Key
Prussian Kuirassier Helmet	Blond Wig
2 by 4	Romance Novel
Bandoleer of Grenades	Chocolates
Chainsaw	Lipstick
Scythe	Everything
Tectrixcalibur	Tectrix of the Arbitor
Scabbard of Tectrixcalibur	Ink of Squid Pro Quo
Smith Corona Blotspitter	Typewriter
Ink Ribbon Cartridge	Semigoddess' hair ribbon
Fork	Gay Pornography
Probably skeleton key	Skeleton Brush
Midnight Crew IntermissionEdit
War Chest/Battledrobe/Brawlsoleum/Wrathtub	Deck of Cards
Cast Iron Horse Hitcher	Ace of Spades
Occam's Razor	King of Spades
Claymore Sword	Eight of Spades
Saber Rattle	Four of Spades
Bait and Switchblade	Seven of Spades
Spades Key	Instructions for Playing Blackjack
Licorice Scotty Dogs	Deuce of Spades
Licorice Gummy Bears	Deuce of Clubs
Swedish Fish	Deuce of Diamonds
Wax Lips	Deuce of Hearts
Radio	Ten of Spades and Four of Diamonds
Demolition C4	Seven of Spades
CD's Backup Hat	Jack of Diamonds
Lance	Snowman's cigarette holder
Hivebent Edit
Kanaya Maryam's Lipstick	Chainsaw
Homestuck: Intermission 2 Edit
Egyptian Sarcophagus	CAIRO OVERCOAT
Homestuck: Act 6 Intermission 2 Edit
Lrd English's Assault Rifle	Green Sun Cane