Blah vs La vs Law

Payge was attempting to sing the Hot Chelle Rae song "Tonight, Tonight" and it came out

Blah, Blah, Blah, Whatever

To which Chayce corrected her "no, not Blah, it's La". Payge said "but it is a boy singing it, so it is Blah, not La! Girls say La".

Chayce insisted, "no, it is La".

Payge retorts "the song isn't about laws, they're not breaking the law, it's about a party!"