Lyric discussion by markxist 

Cover art for Judy In Disguise (With Glasses) lyrics by John Fred & His Playboy Band

Isn't line 6 'cross your heart' as in cross your heart bras?

Lyric Correction

the correct line is - cross your heart , yeah, with your living bra

It is because the Playtex bra company ran an extensive ad campaign with that slogan

line 7 is wrong too, as rendered it is senseless. my guess at the line is - I'm jealous, wouldn't stop all the guys still might not be right, but I think it is closer

Yes, it is a pun with "Cross Your Heart" bras. The last part of the line is also a brand of bra, the "Living Bra" (I think Playtex made it), so called because it was flexible and conformed to the wearer's shape unlike the body armor bras of the 50s.

I just have to add that I like this song way better than Lucy in the Sky. Lucy in the Sky is so pretentious and self-referential, not to mention musically boring. "Judy in Disguise" is just as lyrically ridiculous, but with a better tune, and you...