Yes, you've heard it. And if you've got a toddler you probably never want to hear it again.
But like it or not 'Baby Shark', the fishy cult phenomenon, is still in the UK Top 100 after 17 weeks and has racked up well over 2 billion YouTube views.
Kids have sung the song and done the dance, while slightly older kids have had lyrics tattooed and done the challenge - but now your doggo can get in on the act too with this 'Baby Shark'-Inspired costume.
Sold on Amazon by UK seller Rubie's Masquerade Co. (UK) Ltd the shark dog costume is available in sizes small to extra large at a bargain £18.45. While not endorsed by Pinkfong the costume looks remarkably like the Baby Shark character and transforms your little biter into a Baby Shark - or makes it look like it's been eaten by one.
So where did the Baby Shark phenomenon come from anyway? While the Baby Shark song has been around for years in children's holiday camps and was a 2007 viral hit in Germany called 'Kleiner Hai' it was the 2016 South-Korean version by Pinkfong that helped it go global after it was picked up by and performed by numerous K-Pop bands.
So what other cult characters can you dress your dog as?
How about Spider Dog?
Inflatable T Rex?
Or a rainbow-haired unicorn?
Visit Rubie's Masquerade Co. (UK) Ltd on Amazon and check out all the doggo costumes on offer.