While making an appearance on Conan Wednesday, Charlie Day admitted he's been hanging on to quite a bit of Zac Efron's fan mail.
When Conan O' Brien asked him whether he gets annoyed by the paparazzi hanging outside of Zac's home, the Horrible Bosses 2 star said, "It's more like strange teenage girls writing love letters and confusing my gate with his gate. So, I'll get these like strange letters covered in hearts."
Adding that he didn't "know what to do with them," Charlie added with a laugh that he is "putting them all up on a wall in my house."
"I'm gonna invite him over and be like 'Zac, this is my room. This is my shrine for you.' That will freak him out real good."
Fan mail hoarding aside, Charlie and Zac seem to be having a blast living next to each other, from the looks of this Instagram video the Neighbors star posted this summer.