You were just playing The Binding of Isaac, going for Delirium completion marks. You had on the Femboy Catboy Delirium mod on, and it gave you a good chuckle. While going for marks, you got to the final Delirium completion mark as Tainted Jacob. You beat Delirium, but in the death animation...your monitor started releasing the white goo that makes up Delirium?

Just as you're about to say something, it then snapped towards you, covering your body and transforming you...you felt the goop merge as your eyes became black and your irises became yellow. The goop makes your body all white and goopy as you look in the mirror, seeing a humanoid Delirium looking back...weird....but then some cat ears sprout, and so does a cat tail! Then a grey hoodie, grey hotpants, and grey thigh highs appear on you, confusing you. What also confuses you is that they goop leaves no mess...now what?