Top definition
The act of catching a spouse, friend, family member or significant other in the nude and in a sneaky, ninja-like manner, force your index finger into this persons rectum.
I was so surprised and traumatized when my cousin gave me a sneaky samurai. I never even knew he was there until he struck.
by lukey_dukey February 08, 2012
Get the mug
Get a sneaky samurai mug for your mama Larisa.