because it's easier to say than
"ohmygodyesnoohshityesdeeperyesgodfuckmepleasenoshityesohnoaaaahfucknogodyespleasenoshitfuckyesyesyesohshitohoh!"
"ohmygodyesnoohshityesdeeperyesgodfuckmepleasenoshityesohnoaaaahfucknogodyespleasenoshitfuckyesyesyesohshitohoh!"
Yep I think that sums it up alright.
Because it's not a four letter word