Top Definition
The act of putting your dick into the cardboard center of a toilet paper and having your sexual partner arouse you until your dick bursts out of it, or it is bulging around the edges. You then proceed to fuck.
man, i love to tunnel fuck.
does your dick rip the tube?
naw man, i got a tiny dick.
by whydidimakethisshit February 23, 2014

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