Rock On 

= you’re doing awesome, keep going!  I’m so excited

synonym for rock on = keep rocking, Awesome!, Party on! Keep moving!, Go for it!

*IMPORTANT NOTE:

this term of “rock on” is not the same meaning as the noun “rock.”

“Rock on” relates to the music, rock n’ roll. So “Rock on” is said often at rock concerts.

Ex:  You are an awesome guitar player.  “Rock on!”

Ex: Person #1:  I have an extra ticket to the concert, if you want to go.

Person #2: “Rock On!” Yes, of course, I would love to go.

* The term “rock on” is usually said while making this hand symbol: