whelpday Share definition Flag an individual's day of birth. whelpday is most commonly used amongst the furry community, and some scifi and gaming communities. My friend's whelpday is coming up. He'll be 27. Let's plan a big whelpday party. whelpday by Lacy Musketeer February 4, 2012 0 0 Get merch Get the whelpday mug. Buy Now — $32.95 See more merch
