The Mad Men actor addressed the recent rumours that have emerged regarding what he does or doesn't wear under his trousers.
The 42-year-old appears on the cover of the latest edition of Rolling Stone magazine where he was asked what he thought about the Tumblr blog dedicated to 'Jon Hamm's Wang'.
“They’re called ‘privates’ for a reason. I’m wearing pants, for f**k’s sake. Lay off," Jon ranted.
"I mean, it’s not like I’m a f**king lead miner. There are harder jobs in the world. But when people feel the freedom to create Tumblr accounts about my c**k, I feel like that wasn’t part of the deal… But whatever. I guess it’s better than being called out for the opposite.”
Jon says he finds people's recent fascination with his supposed 'impressive anatomy' strange.
The star suggested this is representative of the moral decline of modern society.
“Most of it's tongue-in-cheek but it is a little rude," he blushed. "It just speaks to a broader freedom that people feel like they have - a prurience.”
In the hugely popular TV series Jon plays slick advertising executive Don Draper. As the show prepares for the start of its sixth season Jon reflects on his character's good and bad sides.
"[Don has a] tremendous creative streak," he explained. "[He] is a very complicated character, and I’m a fairly complicated individual, but that’s pretty much where the similarity ends. I try to imbue Don with a humanity that is raw and misunderstood and meaningful. It’s not that I just come in and throw a suit on and act super cool.”