Zach Galifianakis learned this the hard way when he attempted to incorporate a Pitt look-alike into a skit starring Aniston in his Between Two Ferns segment on Funny or Die.
And let's just say, it didn't go over well with the Horrible Bosses star.
"I had found this guy [in our hotel] who looked exactly like Brad Pitt. I wanted to use that in some way," Galifianakis said, according to Us Weekly. "I said, 'Jennifer, I have this guy who looks like Brad Pitt. I want to make it seem like I think it's him.' "
"She looked at me like, 'What the f--k?' " Galifianakis went on. "And I totally agreed with her. How rude of me to do that! Why would she want to talk about that? She gets inundated with that s--t all the time. I totally understood."
Aniston's publicist decliend to comment.
Needless to say, the Hangover star switched up the skit. He instead called upon on Tila Tequila to appear in the segment, which ended up being about Galifianakis choosing the former MTV reality star over Aniston.
Check out the clip above to see how that turned out.