don’t know why, but my favorite word lately is doofus. here, i’ll use it in my most common recent sentence: “oops. i’m sorry about that. i’m a doofus.”
my mac dictionary tells me not only that the plural is “doofuses”, but also that it originated in the 1960s and could be an alteration of “goofus” or from Scots “doof”.
there you go. make sure to credit me when you use that little tidbit.