Two Face (chocolate and rainbow sprinkles)

Mister Softee ice cream trucks feature “Two Face”—a soft-serve vanilla ice cream cone with half chocolate sprinkles and half rainbow sprinkles. The term “two face” has been cited in print since at least 2012.
 
An ice cream cone with half chocolate sprinkles and half rainbow sprinkles is also called a “baby raddle/rattle.”
   
 
sicklekind
June 14, 2012
(...)
But it got boring so we went back and bought ice cream from the ice cream truck! I haven’t eaten food from an ice cream truck for YEARS. We got a Two Face which was half vanilla and half chocolate with rainbow sprinkles and chocolate sprinkles on each half :B
 
Facebook
Mister Softee Reading Pa
(...)
Mister Softee Reading Pa
May 27. (2013—ed.)
Here’s Gabe about to enjoy another one of our new items. The two face. A combination of rainbow & chocolate sprinkles!