a person or thing that excavates. 2. a power-driven machine for digging, moving, or transporting loose gravel, sand, or soil. 3. a sharp, spoonlike instrument used for scraping out diseased tissue, as in dentistry. Origin of excavator. 1805-1815.
If it is a permanent tattoo, then it would last on the bottom of your toe forever. If it's a temporary tattoo, it would probably only last a day or two.
Long showers or baths should be avoided for about 2 weeks after your new tattoo - prolonged soaking and shower jets directly on the area can damage your skin. Avoid harsh shower or bath products on the skin, and don't rub the tattoo when you wash.