My parents used to swear that only they could tell the difference between the 'musical bus' and an actual ice cream van. We used to run round the house to find them and excitedly ask, "is that the ice cream van?"
"....no, musical bus" they almost invariably replied.
A childhood belief about ice cream vans

others believed things like this
- My parents told me that when the ice cream van was playing music, it means he's run out of ice cream :(Anon
- "Yooce cream, ice bean, we all scream for ice cream!"
This song was always stupid to me.— Shirley B. - My dad told me that ice cream vans only play music when they have run out of ice cream. Anon
- My dad would tell me that if the ice cream van was playing a tune it meant that he had no ice cream left. Duh!Anon
- when i was a kid my mother told me that when the ice cream man was playing his music he was out of ice cream— Lynnzea
- My mum used to tell me when the ice-cream truck turned on his jingle, it meant they had run out of ice-cream!Anon