Binding of Isaac: Rebirth Wiki

Added in Afterbirth †

Wait What? is an activated item added in The Binding of Isaac: Afterbirth †.


  • Upon use, Isaac farts, knocking back enemies and their shots. It also sends out rock waves that deal 10 damage per tick to nearby enemies and break obstacles.


  • This item is identical to Butter Bean Butter Bean in appearance.
  • Removed in Repentance Butter Bean Butter Bean has a small chance to turn into this item upon pickup.
  • Added in Repentance Each run has a chance of replacing Butter Bean with Wait What? in item pools. Both items generally do not exist during the same run.
  • This item is useful for opening Secret Room Secret Rooms, Super Secret Room Super Secret Rooms, Bedrooms and the path to Mines Mines. In Bedrooms, it can also open up the passage under the carpet.
    • To break open a secret room, the wall must be hit with one of the rock waves, not the gas cloud, so Isaac needs to stand a few steps away from the wall.
  • The earthquake can open Bomb Chest Bomb Chests.
  • Removed in Repentance The earthquake can be used to blow up the Donation Machine.png Donation Machine or activate/blow up a Shop Restock Machine.png Shop Restock Machine.


  • Added in RepentanceBook of Virtues Book of Virtues: Spawns white-glowing wisps on the middle ring that don't shoot. The wisps invoke the effect of Wait What? when destroyed and do not persist between rooms.
  • Ghost Pepper Ghost Pepper: Shoots a flame behind Isaac upon each use of Wait What. While Car Battery Car Battery does not duplicate Wait What's shockwave, the flame shot is duplicated regardless.


In-game Footage[]


  • The item description is a reference to a brand of margarine named "I Can't Believe It's Not Butter!".
  • Removed in Repentance Unlike Butter Bean Butter Bean, this item has no unlock condition, meaning it's possible for the player to find it right away, making the joke and reference slightly confusing.
    • Added in Repentance Wait What? no longer shows up naturally in any item pools.


Switch Greedier mode only J970 EMC4 (First Golden Treasure Room)

Switch Hard mode only 8XT6 PKGM (First Treasure Room)