I just discovered a glitch in version 0.101h where you can use an effect in Urotsuki's real room.
Requirements:Chainsaw effect and proper timing.
1.Enter the Graveyard World from the Nexus.
2.Go to the Weird Room.
3.Chainsaw the sculpture,but not escape;wait for the purple creatures to come next to Urotsuki.
4.When a purple creature is about to catch you,immediately press X and select the "effects" tab.
5.Equip any effect you want.If the equip sond effect doesn't play before you wake up,then you will succesfully equip it while you're awake.Enjoy :3