Noun
(uncountable, US) Peanut butter and jelly (or jam) that is spread on bread to make a sandwich.
(countable, US) A sandwich consisting of bread spread with layers of peanut butter and jelly.
Used other than figuratively or idiomatically: see peanut butter, jelly.
Source: en.wiktionary.orgThere's nothing better than good sex. But bad sex? A peanut butter and jelly sandwich is better than bad sex. Billy Joel
When I was 16, I discovered jazzercise. And I thought it was the greatest thing since peanut butter and jelly. Lisa Rinna
I make a mean peanut butter and jelly sandwich. Jack Black
Romance novels are birthday cake and life is often peanut butter and jelly. I think everyone should have lots of delicious romance novels lying around for those times when the peanut butter of life gets stuck to the roof of your mouth. Janet Evanovich