How many (and where are they located) veins are there in a human tongue?

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http://ubuntuforums.org – I'm totally not planning on piercing my own venom bites or anything. I just want to know.. for um, 'reference' purposes. Or something. Kidding, kidding. My friend and I ordered a piercing kit off ebay, and she said venoms would suit me. And they look pretty safe to me, considering they are off to the side and all, but I'm not convinced. Are there any veins/blood vessels or dangerous stuff where venoms go? I'm only asking this question here because I don't want to make an entirely new account on a separate forum site just for this. If you're good with anatomy n' stuff, but don't know what a (Hardware)