"Pai" is a word commonly used in Thailand and it means "go" or "leave" in English. It is often used to give directions or to indicate that someone should move from one place to another. Full definition
You can go surf in Mal Pais in the morning and explore Curu National reserve in the afternoon without the stress of changing accommodations. (casacolores.com)
In a 2016 article of El Pais (English version) you can read (Note: CEOE is the Confederation of Employers and Industries of Spain): (politics.stackexchange.com)
There are a few moments in the film that are assbustingly hilarious, and they are all the fault of Josh Pais, who is the opposite energy level of the other characters. (collegemoviereview.com)