Most people know Leslie Nielsen from his comedy career, but it's worth noting that he had an early career as a straight-faced actor.

In fact, Nielsen starred in sci-fi classic 'Forbidden Planet', and appeared on TV shows such as 'Columbo', 'Kung Fu' and 'Ironside'. All of these, however, helped to give Nielsen an air of credibility and enabled him to remain completely straight-faced when delivering some of the silliest and funniest lines in comedy.

Yet, while many might have thought that this was simply something that Nielsen switched on and off, it turns out he was like that in real life. In fact, Nielsen even carried a fart machine with him wherever he went - and deployed it in the most unlikely places, often during press junkets and interviews.

A video surfaced recently on Reddit which showed Nielsen farting continuously throughout a press interview in 2003 for 'Scary Movie 3', all with a completely straight face.

Take a look.

As it turns out, this wasn't the first time Nielsen had spent an interview firing off his handheld, hidden fart machine. In an appearance on 'Late Night With David Letterman' in 1982, Nielsen hid the fart machine in his hand and let it off in the middle of a discussion about 'M*A*SH*', a show he had a guest-starring role in.

He used it again in 1989 when he appeared on 'Wogan', letting it off in the middle of a discussion about his appearance and his education, adding that he was associated with being "a man who has a background, an education, and I have to (fart) protect that image."

Another video on YouTube shows Nielsen, during an interview on 'GMTV' in the '90s, letting one off in front of Lorraine Kelly, who it appears wasn't aware of the hidden fart machine.

It wasn't just on interviews either.

As Nielsen explained in a retrospective interview about the first time he used the fart machine on the set of 'Airplane!', he often fired it off in elevators - even when people recognised him, just to make it even more weird for people.

Sadly, Nielsen passed away on November 28th, 2010 at the age of 84 - but not without getting one last laugh. On Nielsen's tombstone, below his name are the words, "Let 'er rip".