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1) An obsessive facination with deceased tortoises.

2) An erotic attraction to or the need to copulate with deceased tortoises.

Etymology:

Normally enjoyed by the lesser active and unfit of the human species, due to the fact that a dead tortoise will not say no or crawl away and thus irradicates the fear of rejection.
1) Look a dead tortoise--lets partake in the act of Necro-Tautology!
- You sick fuck, leave it alone

2) People have said that I am a tortaulogist.
- Dude you hump tortoises?
by Grey M@a September 10, 2004
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