I grew up within 2 miles of the original Callahan's in Fort Lee, NJ. I was a poor kid, so the visits were a rare treat. As I got older, got a part time job and a car, my visits and waistline grew. I know now they are deadly, but they are great (their motto is, "so big, so good".) Truth in advertising.
Here is the menu, no need for a pen: Deep fat fried hot dogs. Deep fat fried potatoes. Coke. Done!
When you order, get a toasted roll. Like Starbucks, you should order in the proper manner: "Single, TR. Fries" - that's a hot dog on a toasted roll with French Fries.
I only give 4 stars because this isn't the original - a joint I believe is closed for good (sigh!)
For an old-time treat - this place can't be beat.