Discovered by GamSla341 on May 13th, 2023. This glitch is a simple way to quickly defeat enemies however it is somewhat limited since you have to pick up a new item that you have not obtained.
This makes it most useful against Hinox's that are holding weapons you have not gathered before.
To perform you want to begin a spin attack and in the middle of it pick up a weapon or item that makes a textbox appear. If done correctly you should see the contact area of your weapon and the enemy flashing rapidly.
Once you close the textbox the enemy should have taken damage equivalent to the amount of times it was hit per frame.
Example: