Actor Justin Theroux says his star wife Jennifer Aniston is so funny that she often makes him crash to his knees in hysterics.

The 44-year-old actor married the former "Friends" star in August last year following four years of dating, but their romance is still very much alive and couldn't be more "fun", reports femalefirst.co.uk.

Speaking in a video for Loaded magazine, Theroux said: "It's a laugh a minute. When we get on a run, it's pretty fun. There's been a couple of times when she has brought me to my knees laughing... Literally, there was one time and she did something so funny and I was literally on my knees. So yeah, it's a fun house."