I haven't used alcohol in many years, but when I did so the sure recipe was the ORIGINAL Wallbanger as drunk by the Stones on their private 707. This I always told myself was for evenings when I was just stopping into the pub for one drink after work, and it always ended up with me weirdly dressed at 6 AM the next day in some other state, trying to explain stuff to a cop.
12 ounce collins glass, fully iced with little cubes
Ounce of Galliano liqueur
2 ounces gin or vodka
Fill with Orange Juice (with all the ice this will only be about 2 1/2 ounces of juice)
Stir once
Float a quarter teaspoon of Grenadine syrup on top and let it sink in ,
You cannot tell by taste how potent this is, it's more like a tall cocktail than like the highball it resembles. You can still walk after two of them, but usually after three it's the floor for you.
My other favorites for serious drinking were green Chartreuse, flaming shots, and a rum gimlet made with overproof Barbados rum.
For ordinary socializing I mostly stuck with good sour mash whiskey, and water or seltzer.