I enjoy cryptic crosswords. (Sudoku is just . . . no.) Here's a really easy clue I just made up: "Greeting found at the end of 'Othello' (5)." If you message me with the answer, it's likely that whether or not you figured it out will be somewhat ambiguous.
My favorite dinosaur when I was a kid was Diplodocus. It was the longest. Though I'm sure they've since discovered/conjectured a longer one from some fossilized baby tooth.
I avoid sincerity and openness on dating websites but not, for the most part, in person.