From their former website (retrieved from the Wayback Archive in 2009 and 2011) they say of themselves:
The Jesterman’s Creed
Laugh and the glad world laughs with you,
Weep and the sad World will sigh!
Mirth is our Life’s true Elixir;
It show you’re a “Regular Guy!”
There’s nothing so banishes worry,
nor puts such a big crimp in sin;
Nor smooths out the wrinkles of trouble,
Like a jolly old Jesterman’s grin!
It rolls off the years from your shoulders,
You’ll forget that you’ve grown to be men!
Your youth turns once again to embrace you,
For you’ve grown to be schoolboys again!
So, if you’ve got grouches, don’t bring ’em,
It’s your laugh and your joke that we need;
For Mirth is the Doctor of Trouble,
And Laughter the Jesterman’s Creed.
They say further:
The Royal Order of Jesters proudly believe and participate in Masonry.
Whereas most Masonic bodies are dedicated to charity, The Royal Order of Jesters is a fun “degree,” with absolutely no serious intent. The motto, “Mirth is King,” is sufficient to give voice to the purpose of the organization. The Royal Order of Jesters feel that there are times, after our hard work and dedication to family and mankind, when everyone should remember to laugh and appreciate the good work one has done.
The original meeting resulting in the formation was held on February 20, 1911, by Shriners on a pilgrimage to Aloha Temple, Hawaii, in the Captain’s office of the “S.S. Wilhelmina.” Noble A.M. Ellison of San Francisco, California, was responsible and the original cast included a Director and thirteen members. It was organized June 25th, 1917, at an informal meeting. Jesters are made from members of the Shrine in good standing.
Membership is by invitation only, not application.
Unverified – Royal Order of Jesters Initiation Ritual from 1928