What is Sneaky-fast?
1.
When you're being so fast, you don't even know you are being fast.
Stealing the bases in baseball, (according to our research teacher).
OR...
When your learning is so sneaky-fast, that you don't even realized you learned the material.
See
Random Words:
1.
a person that is probably the coolest guy/girl you will ever have the chance to meet
hey dude did you see that guy he is so ballerrific..