Top Definition
Titty fucking a girl, but instead of kneeling over her stomach as you do it, kneel over her face. As you thrust back and forth between her breasts, your ass crack rubs up and down over her nose, as if she was in a wind tunnel.
Thank goodness I had washed my ass crack before my date ... that girl wanted me to give her the Chicago Wind Tunnel!
by Tuffy May 24, 2005

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