Wednesday marked 60 years since John Bollinger and Joe Burton rolled out their first Whopper Burger Basket at Fat Boy. Now, as many as four generations of the Burton clan can be found at the Bath Road icon serving up a menu that’s virtually unchanged since Bill Haley and His Comets were topping the charts in 1955 with Rock Around the Clock.

Current owners, Jeanne and Ken Burton have been running the business since the ‘80s and their children, Brian Burton and Jamie Burton Alexander, have worked there since they were children — a tradition they are passing down to their own children.

“We have five grandchildren; one boy and all the rest girls and they all work here,” Burton said.

Ken Burton manned the grill while younger workers worked the fryer, poured drinks and made frappes.

Car hops stood in front of the counter where several racks designed to fit onto car windows built up with tickets on them resembling a wire parking lot. They all affectionately refer to Burton as Mrs. B.

Burton herself said she’s been working at Fat Boy as an owner for about 32 years, “I did work a little bit before for my mother-in-law and father-in-law.”

The original sign with the light-up arrow was taken down in a storm several years ago and the occasional green awning has to be repaired as tourists try to get a front row seat with their campers but the beloved seasonal restaurant has gone through little change over the years.

Jeanne Burton said, “We try to keep it as original as we can and we’ve been taught by our forefathers here and they always said be careful what you change.”

“We’ve tweaked a few things,” Burton said, “We’ve added a few things to the menu but pretty much, it’s the same.” Burton said recipes like the coating for their onion rings has remained the same but they had to change their nuggets a few years ago, “It was quite a feat trying to find a nugget that we thought compared to the ones we had before but I feel like we’ve done a pretty good job.”

As the lunch crowd began to file in, the lot filled up as other patrons slid into the booths inside, “Actually, we’re fortunate — a lot of people come by word of mouth and we try to do good food at a reasonable price and we have a lot of people that came in when they were young and now they’re bringing their families in,” Burton said.

“It’s a second and third generation kind of thing, so it’s really nice,” Burton said, “after tee-ball, sometimes they come in after softball practice.” Burton said local schools and Bowdoin College have also made Fat Boy their stop for trips.

It wasn’t always little kids coming in after soccer practice. During the heyday of the Brunswick and Morse High School rivalry, it became a demilitarized zone for adolescents.

“It’s really funny because the Bath side was the smaller side and it was towards Brunswick and the Brunswick side was towards Bath because there were more people,” Burton said.

Burton said, “They used to have fights and they used to have a police officer on duty every night because of the fights.”

“Once a year we’ll have our sock hop and they’ll have their old cars out in the parking lot and they’ll start revving them up and it just puts you right back — that’s what they used to do. They used to try to out-rev each other with their cars and then they would just take off out of here,” Burton recalled.

Best sellers of the summer? “BLTs, and onion rings and any flavor frappes really,” Burton said, “we put out a really good onion ring – we put a lot of time into making them and they’re really good.” She also said the lobster rolls, clams and seafood in general are always hits, “It’s all freshly breaded and cooked to order.”