Weird B is a glitch which allows you to use B Button Action IDs as if they were Item IDs. Many masks put special actions on the B Button, such as Punch, March, Dance, Pound, and Dive. When you perform Weird B, you will use an item which has the same value as the B Button Action. The resulting item is different on the US and JP versions.
|ID||B Button Action||Item (US)||Item (JP)|
|10||Blank (Goron Spike Roll)||Magic Bean||Magic Bean|
|25||Dance (Kamaro)||Milk (1/2)||Milk (1/2)|
|38||Punch (Goron, Zora)||Hylian Loach||Sea Horse|
|39||Pound (Goron)||Obaba's Drink||Chateau Romani|
|41||Shoot (Deku)||Land Title Deed||Obaba's Drink|
Save at an Owl Statue on Epona, then reload the save and put on a transformation mask. Get off Epona for Weird B. This was the original Weird B method.
Simply press B on the first frame you land underwater after pressing B to dive as Zora to pull a bombchu.