You're never too old for a unicorn farting a rainbow. (via Sideserf Cake Studio)

Whoever Valerie is, she must have some pretty awesome friends, because she got the sweetest birthday cake ever. Natalie Sideserf of Sideserf Cake Studio in Austin, Texas makes cake dreams come true. With this particular cake, someone dreamed of a unicorn farting a rainbow, and it came out looking exactly as majestic as you'd hope. This isn't a cake to eat; this is a cake to make a wish on and put under your pillow at night. 

Yes, that does say "40th birthday."

Sources: Sideserf Cake Studio | h/t Jezebel