Inspired by LunchBox, who recently invented a new adult beverage called the Solar Flare, I'd like to introduce a new drink:
The NyQuil Colada.

(ETA:) The recipe:
1 shot of NyQuil
1 shot of Captain Morgan's coconut flavored rum
embellish with folding paper umbrella
This is very similar to the Flaming Moe (aka Flaming Homer).

Granted, I haven't tried this yet - though with the little umbrella, how can you go wrong? I'd also like to suggest the Robitussin Russian:
1 shot Robitussin
1 shot Godiva White Chocolate Liquor
Yum!