1. A smelly vagina.
2. A rancid gooey tunnel of love.
3. A fish stuck in a pvc pipe.
1. that bitch has got one nasty tuna tunnel.
2. thats one hell of a gnarly tuna tunnel.
3. sometimes, living at the lake, our sewer becomes a tuna tunnel.
Female Genitalia, usually referring to a distinct fish-like smell eminating from the orafice/otherwise known as the slit.
Damn, that girl's tuna tunnel ROTTEN.
by Wamba September 16, 2003
a rather fishy fanny
damn that girls gotta tuna tunnel, my cock smealt like a fish market after banging that ho'
by DENNISLIKESURMOTHA December 21, 2006

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