BMO

Acronym for "Bring my own"
Often used in a context when you are offering to BYO and prefer to speak in the correct person.

Don't worry your sexy hunk of man meat, I'll BMO drinks

Waterperry

A western Australian act of sexual depravity. Most commonly involving water sports, sharting, and a pumpkin carved to resemble Perry the platypus.

Bro, I brought this girl home from Northbridge the other week and she wanted a waterperry, I'm still trying to clean the carpet and walls! Totes worth it though