See me once, I like riddles so don't be a buzzkill
See me twice, tell everyone because I'm really ill
First hint:
See me once, when hit I do a spiral
See me twice, when hip I do go viral
I am prepared to give out more hints if needed. Good luck!
Here are the previous riddles in this series (the solutions there have nothing to do with this one, only the process of getting there).
#1, #2, #3, #4, #5, #6, #7