A personal favorite of my girlfriend is straight Amaretto. You can also use it to make Amaretto Sours or add coke and you have cherry coke that will get you drunk.
My personal favorites are Southern Comfort, Wiskey Sours(a little sissy but not when I make them), and 151 shots, in large quantities.
PS Amaretto di Amore has a 3 dollar rebate and only cost 12 dollars so you can get a bottle for 9 bucks...
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