Patience, grasshopper. A delicious after-dinner mint in a glass awaits you, and you're in for a real treat if you have never tasted a Grasshopper.
The Grasshopper is also known as a “Grasshopper Martini”, but it is not in any way, shape, or form a Martini.
Bars and restaurants call it a Martini because it is served in a cocktail (Martini) glass.
Ok, so it's not a Martini, but it is an incredibly delicious, bright green mint/chocolate drink.