Binding of Isaac: Rebirth Wiki
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 15►Butter Bean Butter Bean in appearance.
  • 15►Butter Bean Butter Bean has a small chance to turn into this item upon pickup.
    • Added in Repentance Swapping Butter Bean with other active items no longer has a chance of turning it into Wait What?.
  • This item is useful for opening Secret Rooms, Super Secret Rooms, and Bedrooms. 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 Chests.
  • The earthquake can be used to blow up the Donation Machine or activate/blow up a Restock Box.
    • Added in Repentance Wait What? can no longer withdraw coins from the Donation Machine.


  • 15►Ghost Pepper Ghost Pepper: Shoots a flame behind Isaac upon each use of Wait What. While 15►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!".
  • Unlike 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.


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

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

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