Out of all of Britney Spears' iconic singles, Toxic is definitely one in all her most recognisable.

The 2003 bop got here straight from her fourth studio album, In the Zone, and was instrumental in firing the American star into a good larger state of superstardom.

However, it has now been prompt that Toxic was really written about one in all Channel 4's most beloved veterinarians.

The Sun experiences that publication Pop B**ch defined Britney's author, Cathy Dennis, was really concerned with Supervet Noel Fitzpatrick.

They wrote: "The man who inspired the Britney Spears track Toxic was someone that the song’s co-writer Cathy Dennis had been dating in the early 2000s, who broke up with her in 2003: Noel Fitzpatrick."

READ MORE: Britney Spears 'on crystal meth' fears ex-husband Kevin Federline

The gossip publication added: "It’s unlikely you’d have known who he was at the time (unless you had a sick spaniel) but he’s better known to most people nowadays as Channel 4’s Supervet!"

Breakups are laborious, however whoever Toxic is predicated on will need to have kick-started a very painful break up if the lyrics are something to go by.

Fans discovered this tidbit hilarious, with one commenting: "Wow who knew Noel Fitzpatrick was toxic?"

Another agreed: "Here’s your reminder that Cathy Dennis f***ed supervet and then wrote Toxic about him."

Although Toxic grew to become synonymous with Britney's 2003 period, it was not initially written for her.

Writers Cathy, Henrik Jonback, Christian Karlsson and Pontus Winnberg penned the monitor for Janet Jackson.

However, it was then supplied to Kylie Minogue, who turned down the monitor.

Eventually, the tune got here throughout Britney's desk, who recorded it shortly thereafter.

Upon the only's launch in 2004, Toxic hit primary in 15 nations world wide.

It additionally went multi-platinum, promoting greater than three million copies within the course of.