If you thought the worst part about living next to Zac Efron would be Robert De Niro parties and paparazzi, you're not even close.
Actor Charlie Day and the "Neighbors" star are actual neighbors in real life. And though parties or paparazzi seem like a potential downside to living next to Efron, Day told Conan that the worst part is actually strange teenage girls.
Day revealed that sometimes he accidentally receives love letters from Efron's starstruck fans, but the good news is he figured out the perfect thing to do with them.
"Conan" airs weeknights at 11:00 p.m. ET on TBS.