Chair Menu
This is what it should look like

The Chair Menu glitch allows the player to open the pause menu while sitting in the chair.

This is a starting step for more complicated glitches, such as the Chair Storage.

Enabling the glitch

Enter the chair while holding the Shift button. First interact with the chair, press the Shift button immediately afterwards. If done correctly, Sabitsuki will sit on the ground while being on the chair's place. Press the Shift button again to stand up. Now the pause menu can be used inside the chair.