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We might live in a more liberal society than those that have come in the decades and centuries before, but there are still boundaries that the majority of us feel uncomfortable about when breached.
It is, to give a specific example, still considered unacceptable to shag in public. But that's not to say that the social stigma is stopping us from doing it.
A recent survey conducted by sex toy company Adam & Eve found that 52 percent of those asked had done the dirty in a public place.
Dr. Paul Dobransky, a psychiatrist and author of the forthcoming The Secret Psychology of How We Fall in Love, has previously told the New York Magazine that our love for risky sex has something to do with the interconnection between 'danger' and 'arousal'.
He explained: "If you look at our two core instincts - survival and reproduction - then you can split arousal into two categories: danger arousal, which is a call to arms or to action, and sexual arousal, which is a call to reproduce.
"They're two sides of the same coin, but the brain doesn't always know the difference and can easily confuse the two."
Which brings me on to Daniella Hirst, 28, and Craig Smith, 31, who you've probably heard of for their late night antics in a Domino's Pizza last week.
In a 40-second clip, Daniella is seen performing a sex act on Craig while staff prepared their 12-inch pepperoni... no comment...
The couple have now explained to The Sun why they ended up shagging and it seems to align with Dr Dobransky's theory about arousal and danger. Here's the pair of them, and it contains sexual content.
Danilella said: "I'm very open-minded about sex and public places - I love the thrill you may get caught.
"But obviously I never thought we'd get caught like this and end up all over the Internet."
Craig added: "After ordering the pizza we talked about all the places we'd had sex with each other.
"Our top five include a bus, a van, a hotel, swimming pool and a field. We wanted to see if we could top it.
"We got a bit frisky and one thing led to another. Domino's is definitely now our number one - going to be hard to top it."
Danilella says she's 'open-minded' about public sex. Credit: Facebook
The couple had spent the weekend drinking in Leeds for Craig's birthday when they got the train to Scarborough on Saturday evening. They felt peckish so headed across the road to Domino's - where they threw caution to the wind and went at it.
Speaking about their viral fame, Daniella said: "We woke up the next morning and our friends told us about the CCTV - we just laughed about it going viral. That's just the type of thing that happens to us."
Fair play - they seem to give zero fucks.
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