A cocktail consisting of:

1 oz white tequila
1 oz coffee liqueur
1 splash Coca-Cola
4 oz milk

Nobody can explain where the "Colorado" part came from, but it might have something to do with the color of the drink.

A person who doesn't realize they are transgender yet, or is in denial; an undeveloped transgender person. When they realize, it's referred to as the "egg cracking."