I misheard Modonna's "La Isla Bonita"'s opening line, 'last night I dreampt of San Pedro' for 'last night I dreampt of some bagels'
Easy mistake.
A childhood belief about misheard lyrics

others believed things like this
- The line 'The dark sacred night' in What A Wonderful World is actually 'The dogs say goodnight'...— rebecca
- When I was a child, I had a fear of bagels. I thought they were stale doughnuts.Anon
- My mother didn't want me outside at night so she told me i had to come in or else 'the night air would get me'— Dan
- I used to believe that you spelled "ESSAY" like "SA" and "EASY" like "EZ".— Lauren
- I thought eavesdropping was actually "easedropping" because it was so easy!— Nate
- I thought liposuction was squeezing the fat out of your bellybutton. Too bad it's not that easy...— Angela