Only cocktail I ever make, and I only make it like once maybe twice a year, is one my uncle learned when he was an RCMP officer in the NWT.
Half and half Crown Royal and Bailey's over ice. Any whisky and any Irish cream will do. Skew the ratio in either direction as you see fit (it tends to get stronger if the Bailey's is running out before the whisky, heh). It is dangerously easy to drink. They call it Wolf **** (edit: apparently a version of pee is censored, who knew).
Add some Kahlua, and you have yourself a Duck Fart.