Sphinky Binky

An object made of various materials to be inserted into ones anus for sexual pleasure. Defining characteristics of the "Sphinky Binky" are in its ergonomic design that ensures hands-free-retention within the users anus or "sphincter". Commonly referred to as a "Butt Plug"

-out of sight , out of mind , in my ass.

"In retrospect; I definitely should have taken out my sphinky binky before running this marathon. Yowzers!"