If you are looking for a RSS feed for your site which will supply jokes, you can simply use the feeder available.
Random Jokes Feeder link: http://freesms.parijat.biz/jokefeed.php
You can use a RSS reader to feed this information to your site. A simple use is being done on Funtelya website
Friendship >> FrIeNdShIp
Is A gIfT,
tHaT iS fAiR iN aLl tHiNgZ.
iT rOoTs FrOm OnE's HeArT
&
iNvOlVeS mEmOrIeS
tHaT sTaY nOt
FoR a WhIlE
bUt
FoR a LiFeTiMe ... -,-
>> A Friend Worth Having,
A Task Worth Doing,
A Treasured Dream That's Worth Pursuing,
A Truth Worth Giving,
A Faith Worth Sharing ...
Make
L.I.F.E
Worth Living (=