Much like its root word 'blowjob', a blowjorb is oral sex. However asking for a blowjorb is much more comical and more appropriate to use in public. Also can be used as a currency, blowjorbs representing favors, sexual or non.
"You owe me four blowjorbs for this one."
"So I recieved a blowjorb for all my hard work."