"Irish can bumfuzzle any team" – headline about the Notre Dame "Fighting Irish" football team, Chicago Tribune, October 27, 2002. About the Word: Bumfuzzle may have begun as dumfound, which was then altered first into dumfoozle and then into bumfoozle. Dumfound (or dumbfound) remains a common word today, but bumfuzzle unfortunately is extremely rare.
Your definition of Gubbins leave a lot to be desired. I would say you are wrong, and wrong because you don’t understand the gubbins of the word gubbins. Firstly, you have to be careful in the definition of rubbish. Secondary, understand better what gubbins actually means to them that use the word as part of their dialect, their internal dictionary.