The lyrics are "She was looking kinda dumb with her finger an her thumb in the shape of an L on her forehead." and I thought they were "She was looking kinda numb with her finger in her thumb in the shape of an elf" Lol.
A childhood belief about misheard lyrics

others believed things like this
- My friend told me that if you sucked your thumb, your skin would get all mushy and your thumb would fall off.— Lauren
- I used to believe that a half moon was gods finger nail, and his finger was pointing downwards.— clo
- I used to believe that your thumb would come off if you sucked your thumb too much— Anonymous
- I used to think that the moon was God's toe nail, when it was in the shape of a crecent— Ms.imagination
- I used to believe that if i watched too much TV my pupils would take the shape of squares— Tilda
- i thought that if you sucked yerr thumb long enough it would turn green. dont ask why! — jordan