When you have an IT issue that you are unable to solve a Rob can come and solve it. Often involves Linux, obscure shell commands and a strange affinity with pot noodles.
Tom: Crap, PC is borked, no idea whats wrong.
Jon: Think you have a Roblem.
When a customer in retail comes in with a problem that the boss called Rob has created, the staff can't fix or be bothered to fix because it was a stupid problem
"Fuck me, that's sounds like a complete fucking Roblem"
"Rob did that job and it's fucked so now it's been deemed a Roblem"