The 13 Most Insane Freakshakes In The U.S.

Sassafras American Eatery, Denver

Ever thought of putting bacon in your ice cream? This Denver-based diner has. The Chocolate-Dipped Bacon Milkshake (pictured) starts with locally made vanilla bean ice cream and is completed with house-made Sassafras bacon, chocolate chips, and a little bit of salt and pepper. It's then topped with whipped cream, chocolate drizzle, and more bacon.

Grub Burger Bar, North Wilmington

This burger place has tons of locations across the country and they're famous for their crazy milkshakes. The Sandlot (pictured) is a s'mores-inspired shake topped with a toasted marshmallow, graham cracker, and a piece of chocolate. Their menu includes other crazy inventions, like the Kitchen Sink shake: pretzels, peanut butter, salt, butterscotch sauce, caramel sauce, chocolate chips, coffee grounds, and potato chips.

Volcano Shakes, Honolulu

The Peanut Butter Cup shake (pictured) is made with chocolate-peanut butter ice cream, Reese's Peanut Butter Cups, and Reese's Pieces. Volcano Shakes is also home to some other incredible sounding shakes, like the Rainbow Warrior and Obsidian Mint Crunch.

B Spot Burgers, Columbus

The Chocolate Banana Marshmallow milkshake (pictured) is a delicious combo of chocolate ice cream, bananas, and toasted marshmallows. If you're feeling it, you can get the "adult" version and ask for a shot of Gosling Dark Rum.

Boston Burger Company, Somerville

The Strawberry Shortcake Frappe (pictured) is made with vanilla ice cream, strawberries, shortcake, strawberry jam, and Twizzlers. The rest of their frappe menu is equally as mouth-watering, too. Their Nutella Frappe has vanilla ice cream with Nutella, coconut, hazelnut wafers, and toasted marshmallows. Or check out the Oreo Explosion Frappe: vanilla ice cream, Oreos, chocolate syrup, and toasted marshmallows.

Holsteins Shakes and Buns Bam-Boozled Shakes, Las Vegas

This freakshake has pretty much anything you could ever want in a shake. Called the Fat Boy Bam-Boozled shake, it's made with UV Candy Bar vodka, Reese's, pretzels, sprinkles, Cap'n Crunch, Oreos, and Butterfingers.

BRGR Bar, Portsmouth

This burger bar offers both adult (read: contains alcohol) and non-adult milkshakes with flavors that will leave you drooling. The Oreo Lift adult milkshake (pictured) has crushed Oreos, espresso vodka, Bailey's, and chocolate syrup. Behind it is the non-adult Sea Salt, Caramel, and Pretzel milkshake.

Black Tap Craft Burgers & Beer, New York

Black Tap took New York City by storm last fall with it's crazy, over-the-top freakshakes. We were lucky enough to go behind-the-scenes and see where all the magic comes from. This Sweet N' Salty Milkshake is insane.

The Original Dinerant, Portland

Another freakshake that can only be enjoyed by adults, The Salty Jim is one that you won't want to miss. It's made with vanilla ice cream and bourbon, and then topped with salted caramel and a caramel drizzle.

Burgatory, Pittsburgh

This burger joint boasts a pretty serious menu of crazy milkshakes, but the Birthday Cake Shake is only known to the most dedicated freakshake aficionados. While it's not shown on the menu, it's one of their "top secret menu items," made with house-turned vanilla bean ice cream, yellow cake, and tons of rainbow sprinkles.

Hopdoddy Burger Bar, Addison

Everyone knows Nutella is great on everything ... but have you ever tried it in a milkshake? The Nutella & Chocolate Pretzel shake (pictured) , is an amazing combination of vanilla ice cream, chocolate-covered pretzels, and a Nutella swirl.

Lunchbox Laboratory, Seattle

With Hand-Spun All Natural Shakes and Boozie Shakes available on the menu, this restaurant has an option for everyone. The Drunken Elvis (pictured) is made of vanilla ice cream, graham crackers, peanut butter, banana, and test tube filled with Malibu Banana, Pinnacle Whipped Vodka, and Irish Cream. You have the option to make it virgin, or you could try one of their other non-alcoholic shakes, like the Orange Creamsicle or Nesquick Chocolate.