Bob Newhartand Don Rickles are two of America’s most legendary andnotorious comedians.

It’s no surprise that the two were also good friends.

We are devastated and our world will never be the same.

Bob Newhart and Don Rickles at an event

We were totally unprepared for this" (viaVariety).

However, even Rickles and Newhart seemed to realize their friendship was unexpected.

In 2012, Don Rickles explained it toVarietythis way: “We’re apples and oranges.

Don Rickles and Bob Newhart posing with their wives

I’m a Jew, he’s a Catholic.

He’s low-key, I’m a yeller.

But we share the same values, marriage, children and grandchildren.

So many things happen, there’s so much sadness.

But we can laugh together.”

Luckily, Bob and Ginny Newhart laughed the joke off and a great foursome was born.

“He made me laugh and I made him laugh.

Our wives got together and we’d go on vacation together and just have a great time.

We never explored too much why the friendship worked it just did.

We had a sort of Jack Benny-George Burns kind of relationship.”