What do u drink dark tequila with?!

Tequila comes three ways: blanco ("white"), reposado ("rested") and anejo ("aged"). Reposado and anejo are both gold-colored, as a result of being aged in wooden casks.
Do not waste anejo tequila by mixing it with anything; it's meant to be sipped and savored, like a fine brandy, whiskey, or cognac.
A good quality reposado can also be drunk straight, although some like to mix it (like margaritas, etc).
If you're just going to knock back shots, don't waste money on a good tequila, any old cheap stuff will do.
Mixing Red Bull with any kind of alcohol is not a good idea.

'Dark' tequila? Do you mean A?ejo or aged tequila?
Most A?ejos are made to be sipped like brandy. I suppose you could mix it with a juice or Redbull but they are usually kind of expensive and most people who appreciate them would never do that.
Try drinking it on the rocks.
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If this is about the Don Julio Anejo, i would suggest drinking it straight up.

personal preference

Ice or pure

RAGE

Like a lime, try something that is sour.