If you don't want to go out - or can't go out - to get one, drag out the ol' cookbook and jus' make you one. No cookbook? Then here's a Google search for "chocolate milkshake recipes." It pulls up about 94,500 results! That's a lotta chocolate milkshakes! Now, if that number makes your head spin, just check out Cooks.com and search "chocolate milkshake." That will pull up a smaller slew of chocolate milkshake recipes to try: chocolate mint, chocolate banana, chocolate peanut butter, mocha milkshake...
Ooooh! I do love mocha. I wonder if a mocha frappe freeze counts toward the celebration? Hmmm.... I'd better get the frappe AND the milkshake. Just in case.