Happy Birthday to the one & only H.P. Lovecraft! (August 20, 1890) Your work continues to slither and creep into the psyche of those in this realm and inspires many beyond even what your wild imagination can dream up.
Sadly, from what I know, there is no proper translation for Happy Birthday in R'lyehian. I feel that if I even tried to piece one together, I'd be stating something like "I invite you to meet in a shared space to eat the dreams of the worthless people of the Earth realm"... Either that or I'd wind up opening a gateway to another dimension.