I bet a glizzy was the last thing you'd ever expect to see at a Subway. But Subway locations in South Korea are slanging just that, as Sub Dogs are now on the menu there.

The new Sub Dogs at Subway feature Johnsonville hot dogs inside and come in the following three varieties:

• Sub Dog: shredded cheese, ketchup, mustard, pickles, bell peppers, onion, and jalapeño.

• Double Cheese Sub Dog: a double portion of shredded cheese, ketchup, mustard, pickles, bell peppers, onion, and jalapeño.

• Avocado Sub Dog: shredded cheese, avocado, ketchup, mustard, pickles, bell peppers, onion, and jalapeño.

One thing to note, though, is that the Sub Dogs aren't fully customizable like Subway sandwiches, as you can only choose the bread and cheese for them.