The crux of the issue here is that a waifu is imagination personified. By definition, she is how you fantasize her, and this thought is aided in taking form through a personality set forth in the original source material she came from. The healthy man knows he is imagining his waifu, and accepts this.
Definition of lye. 1 : a strong alkaline liquor rich in potassium carbonate leached from wood ashes and used especially in making soap and for washing; broadly : a strong alkaline solution (as of sodium hydroxide or potassium hydroxide )
Back-formation from lysis. lyse (third-person singular simple present lyses, present participle lysing, simple past and past participle lysed) (biology) To burst or cut a cell or cell structure; to induce lysis. (biochemistry) To break down molecularly into smaller molecules; to induce lysis.