Both rigour and rigor are the same word with the same definition, merely different spellings and both are correct and acceptable. Rigger is however an entirely different word.
Anyway... You're double banned for all of that stuff.
Hashirama is banned for getting to Anzraptor before I did and for thinking he's a linguist. He probably just looked the word up and that's where he found the little BrE and AmE notations.
The post was edited 1 time, last by Bugmeat ().