Summary
This quote is a humorous way to imply that something should never be purchased. By stating that the only suitable time to make a purchase is on a day without the letter 'y', it suggests that the item should be avoided at all costs. It creates a playful tone and highlights the idea that the item in question is undesirable or of low quality. Overall, it serves as a lighthearted advice to not waste money on something perceived as unworthy.