Happy as Larry

[vikki1825]

Who was Larry?

[shaneystar2]

There is one explanation here
http://www.worldwidewords.org/qa/qa-lar1.htm

[laurence2]

It is an australia expression from the late nineteenth century, and larry ''may'' have been the boxer larry foley {1847-1917}. The word ''may'' also relate to 'larrikin' an australian term for a young hoodlum given to acts of rowdiness. Larrikins were particularly active on the streets in the 1880's and wore distinctive neat and colourful clothing.

Hope this is of assistance

[waimarie]

For me there's only one Larry - Grayson !!!