Mr. Tumnus is yet another word for the Perenium (bonch, gooch, taint, grundle, chode, etc).
The use of this narnia name came from scroTUM, and aNUS, hence referring to your chode as Mr. Tumnus. Giving that special area of your body a name just makes it a little more personal. Kinda like naming your junk.
Mr. Tumnus is feeling a little cranky today, I should have wiped better after my dump last night.
by thebrainishuge March 17, 2010
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A man who on first glance you believe has had a transplant of his grandfather's finest pubic hair to their legs until closer inspection reveals that it is in fact their own leg hair. The tight curls and inability for sun to penetrate to the pale skin below, the afflicted is normally of celtic descent, is highly reminiscent of Mr. Tumnus from The Chronicles of Narnia. Whether by coincidence or design, the sufferer, a 'Mr Tumnus', can regularly be found showcasing his fast fingerwork on a flute near young girls.
"I've never knew why Gary refused to wear shorts until today; he's a right Mr Tumnus. Get the leg wax."
by PCBumchin January 17, 2014
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adj. Descriptive of an uphill gardener who's so far in the closet he's found Narnia, taken out a mortgage there and spends his days fraternising with the local populace.
"I don't care if he was married to the bird off Dawson's Creek, that Tom Cruise is so far in the closet he's on first name terms with Mr Tumnus".
by SpunkyMcGiblets June 20, 2014
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