In the 80's or late 90's their was a song sung by a pop/techno group that had a phrase that said "we're having big fun" my husband use to think it said "we're having meatballs"
A childhood belief about misheard lyrics

others believed things like this
- I used to believe that meatballs were made from dead rats.— Dogface
- I always thought that "Staying Alive" by the Bee Gees was sung by Aretha Franklin.Anon
- i thought that the phrase "jet lag" was actually "jet leg" until i was 17...— truffles
- The phrase 'Recycled toilet paper' always worried me.Anon
- I used to believe all Italian women were named Mia because of the phrase "Mamma Mia!"Anon
- I used to believe that the phrase "Mamma Mia" referred to a girl named Mia.Anon