Arguably, one of the main reasons he's become such a beloved, international TV icon is because he's not only able to tackle tricky subject matter with the sincerity it needs, but also laugh at himself and play on his hyper-British awkwardness when he needs to.
But it seems Theroux's ability not to take himself too seriously is something that extends to his life off-screen, too - having tweeted someone's artwork featuring a depiction of him with, erm, tits.
Theroux shared a screenshot of an Etsy page selling a mug with the unusual design, writing: "So many emotions..."
The mug is the creation of Etsy seller CrudelyDrawn, whose amusing designs often feature pop culture figures like Jeremy Corbyn (there's a mug depicting him with tits, too), along with A LOT of tits, and male and female genitalia.
The product costs just £13.50 - which includes delivery - and is made from glossy ceramic.
The mug holds 11oz of liquid, so you can get a solid brew on the go in there, and are also both dishwasher and microwave-safe.
The mug costs £13.50. Credit: Etsy/CrudelyDrawn
"All mugs are designed by me in London, where I live," the artist behind CrudelyDrawn writes on the listing.
"I have a design space in my office where I draw things of varying levels of crudeness.
"I'm joined by my three-legged Cat, Beryl. She doesn't approve."
It's okay though, because we heartily do approve.
If you love the mug as much as we do, you can even get yourself a t-shirt to go with it.
The Louis Theroux tee. Credit: Etsy/CrudelyDrawn
The unisex tee costs £18 and features Theroux's face where you'd imagine a pair of nipples to be. Genius.
And you can also hop on over to the CrudelyDrawn Instagram to check out many other designs of titted-up Donald Trump (his even have mini penis nipples!), Zac Efron (his look pretty good, to be honest), Dwayne 'The Rock' Johnson (BIG), Harry Styles (petite) and Nicholas Cage (slightly wonky... without wanting to boob-shame).
Oh, and better news still - if you use the promo code 'TITSMCGEE', you'll also get 10 per cent off. WINNER.
Featured Image Credit: Etsy/CrudelyDrawn