A female who is not Caucasian, and strictly has sexual intercourse with white males. Furthermore a Twinkie tunnel can be mostly found paying their bills on time and abiding by all laws. Also know as a Cracker Smacker.
A Twinkie Tunnel Thrives on Finding as many Twinkies to put in their tunnels.
"Rhonda is such a Twinkie tunnel! She only dates White guys!"
"I wish Tamika and Darniesha would stop checking out my Boyfriend she is such a Twinkie tunnel!"
"Hey Alicia Gomez is dating another white guy! She is a total Cracker smacker!"