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A euphemism for semen, deposited into the mouth of one adminstering fellatio, usually in the hopes of gaining financial benefit or career advancement.

First used in the January 23, 2002 The Onion article "Who Do I Have to Blow to Win the Bancroft Prize in American History?"
http://www.bigosoft.com/dan/bancroft_prize.htm
"I was so intent on getting that adminstrative position that I guzzled gallons of Tijuana toothpaste."
-or-
"How did someone as dumb as her become Vice President of the company? She must be brushin' with some serious Tijuana toothpaste."
by Pepper February 22, 2005
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2
Sperm that is ejaculated in the facial region.
Flash those pearly whites, senorita--here comes the Tijuana toothpaste.
by Bones March 03, 2004
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