One element to a good sense of humor that most of the other posts failed to mention is the ability to laugh at yourself.
Lots of people with bad senses of humor think they have a good one because they have a favorite comedian who makes them laugh, or think they have a good sense of humor because they're quick to laugh at someone else when they do something silly or stupid. But when they're the person being laughed at for doing something dumb, they'll become furious and storm off, and maybe hold grudges against people who laughed at them.
Someone with a good sense of humor will be able to see what's funny about what they did and be able to laugh along with everyone else, even if they feel kind of embarrassed.
It's not plagiarism. The songs themselves are obviously completely different. Making an engine noise was one in a pretty standard set of whammy bar tricks that was pretty ubiquitous when guitars with Floyd Rose tremolo systems became popular in the 1980s. So many people discovered this trick independent of each other that nobody can credibly claim to have invented it. It was so common at the time as to be generic and kind of hacky.
In other words, it's a piece of guitar technique and not an element that can be copyrighted. Which is good because music would become insufferably boring very quickly if musicians weren't allowed to learn and iterate on each other's technique.