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 poor excuse for a person who laughs boisterously at everything any dumb ass says,in an attempt to be accepted by a very base person,or..