791
rule, innit
(ukfli.uk)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
So you're saying it still could've come from Portuguese??
From what I've researched online, the consensus among linguists is that it is not Portuguese in origin. I haven't found anyone opining this other than this tumblr user in fact. Anything is possible, but this seems completely ungrounded.