Backstreet Boys recorded a fart in their hit song

You may know all the words to the song, but they contributed more to this track than you think.

The Backstreet Boys revealed in a recent interview a fart bandmate Howie did made it onto the recording of their single The Call - where it remains to this day.

AJ McLean recalled “So, when we were in the studio with [producer] Max making the song 'The Call,' Howie [Dorough] was in the booth, and we were doing that vocal break down, [sings] 'dun dun dun, dun dun dun dun.'

“I think he was just putting so much air into the vocal that as he was singing, he went 'dun, dun,' and he farted - but he farted not only on the beat, but in key. So, Max tweaked it and made it sound like one of his patented bass sounds, and it stayed on the record.”

Howie Dorough defended his noise, saying it was just 20-year-old guys doing "guy locker room kind of stuff."

“Everybody at that age – especially Nick [Carter] – was constantly passing gas...And coincidentally, I got in the booth, was breathing in really heavily singing my part, and I guess some extra air kind of came out. It made everybody laugh, and Max decided to take that and sample it to turn it into the “dun dun dun, dun dun dun dun.”

And now you can hear it in the intro to The Call...