Shallah Mehallah can mean anything you want it to mean. The phrase was created and
first used by SGV News First, the
best first amendment auditors on
YouTube.
When you are performing a constitutionally protected act and someone asks you a question and you really don't want to answer them you say Shallah Mehallah. Example : Q- What are you doing? A- Shallah Mehallah!