My wife, despite being told a number of times sings 'Heaven is a half PINT' to the lyrics of OPM's 'Heaven is a half PIPE'
...oh and to ABBA's 'Super Trouper', 9 times out of 10 you will hear from here 'Super-douper'
A childhood belief about misheard lyrics

others believed things like this
- I used to believe that when i died it was like a super mario game... I had a certain number of lives.— David...waffles
- I used to believe that the Super intendant was the Super Nintendo.— Lecia
- I used to believe that your belly button was what held your top half to your bottom half...— Debelouwho
- I used to think that "One, two, three times a lady"
was: "one, two, three times related"Anon - i used to believe that a carreer as a super hero was possibleAnon
- I used to believe that the Super Bowl was a bowling tournament.— Angela