Does anyone know the complete song please?

See

http://www.loc.gov/wiseguide/nov09/lobster.html

"I'd rather be a lobster than a wise guy.
I'd rather be a 'good thing' than a sport.
The 'lob' may be a joke
but still he's never broke,
the wise guy is the one who's always short"

sings the chorus of a 1907 tune by composer Theodore Morse and
lyricist Edward Madden

Ending ...

"And the more of life I see,
It really seems to me,
that the lobster is the wise guy after all."

Listen here

https://www.youtube.com/watch?v=ISBeU_NIrZ4

CJB