In WWE, it's very common for superstars to have legit heat with each other backstage.
You only have to look as far back as Ryback and CM Punk. Two WWE superstars that simply didn't see eye-to-eye backstage and two people that have heavily criticised each other since both departing the company.
If you want to go further back, you can look at the feud between Edge and Matt Hardy. What started as just a feud for TV, quickly became a whole lot more personal, which then led to legitimate heat between the two backstage.
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Another duo that have had problems with each other in the past are Chris Jericho and Goldberg.
Somewhat unfortunately, considering both of them aren't considered full-time wrestlers anymore, they are both on the road with WWE right now and are both appearing on Monday Night Raw.
This means, the duo are bound to bump into each other backstage, which could lead to awkward altercations, especially given their history.
It's well documented the two had legitimate heat when they were both working full-time with WWE, which even led to a real fight backstage in 2003.
With Goldberg leaving WWE soon after, the two never really had to get over their problems, and it's likely they haven't bumped into each other since.
However, with them both now working for the company again, albeit on a part-time basis, some nosy WWE fans may want to know what their relationship is like backstage.
It was something one fan wanted to know on Twitter, so he decided to tweet Y2J and ask what the atmosphere is like between himself and Goldberg.
In true, Jericho fashion, however, he didn't give a very revealing answer, and decided to instead mock the former WCW Champion.
His response was simply: 'Who?'
It's probably for the best that he didn't answer that question seriously.