It's fun. You say "No way! That was way too obviously a joke, guys." And they say "seriously, try it", and lo and behold, it actually works. It's kind of like

It's fun. You say "No way! That was way too obviously a joke, guys." And they say "seriously, try it", and lo and behold, it actually works. It's kind of like a 2nd-order April Fool's joke--they trick you into thinking they're tricking you.