Here's how I hear it, via Spotify:


BIG NAME BUTTON        
As sung by The Royal Teens on "'50s & '60s Lost & Found Records, Vol. 1"

Big name button (ah-ah, you've got to wear a—)
Big name button (ah-ah, you've got to wear a—)
Big name button (ah-ah, 'cause if you don't then—)
You're a square and you're really nowhere.

Big name button (ah-ah, you've got to wear a—)
Big name button (ah-ah, you've got to wear a—)
Big name button (ah-ah, 'cause if you don't then—)
You're a flub and you aren't in the club.

If your name is Bobby, how do we know it?
If your name is Stevie,* why don't you show it?
When you have no button, oh, what a shame!
How in the heck will anybody know your name?

Big name button (ah-ah, you've got to wear a—)
Big name button (ah-ah, you've got to wear a—)
Big name button (ah-ah, 'cause if you don't then—)
You're a square and you're really nowhere.

[* "Stevie" is highly doubtful. All I'm sure of are the vowels. It could be Edie, or Deedee (nickname for Diana), or Mimi, or maybe a dozen other things.

[I'm also doubtful about "'cause if you don't then—". There might be another syllable after "then" but I don't know what it is.]