'X-Men' besties McKellen and Stewart play 'Newlywed Game'

These guys may be the greatest pair of best friends ever!

You may have already seen snapshots of Patrick Stewart and Ian McKellen's New York City adventures-- the quirky pics have gone viral. But the 'X-Men' duo may have just topped that.

The actors recently played their own version of 'the Newlywed Game':

Even though the two have been friends for what seems like forever, they still have lots of trouble answering questions about each other's favorite type of music, most overused phrases, and spirit animals. It's hilarious to watch them struggle. But they also laugh, sing and bicker like an old married couple.

The video's already been viewed nearly 500,000 times!