What makes a good Bawdy lyric???? skill on the part of the songwriter is the only valid answer...if there is real skill in the songwriting then it doesnt matter if the occasional " word" occurs...as the great Tom Lehrer said
" Filth ,I'm glad to say
is in the mind of the beholder
when correctly viewed ,
everything is rude,
I could tell you things about Peter Pan
and the Wizard of Oz , Theres a Dirty Old Man...