1 definition by Plain Cookies

Tac-block {tach-blach}

1) n. Someone who prevents their drunk/high/sober friends from attaining the Taco Bell that they crave.

2) v. To prevent someone from going to/getting the Taco Bell that they desire.
1) "Listen man, you're killing my buzz. I'm seriously hungry right now and you're being a total Tac-block!"

2) "I swear if you get high tonight, I will totally Tac-block you. We've already been there four times this week!"
by Plain Cookies September 29, 2009
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