you can definitely show guys some of your crazy personality up front, that's what makes you unique! however, i wouldn't share too much information at the very beginning, because men love to pursue women, and when there's hardly any chase there's barely any fun. you have to understand where your boundaries are. also, if you tell him too much up front, you won't have as much to talk about afterwards and it will result in moving on too quickly or awkward conversations.
if you have any other questions, you can email me @ firstname.lastname@example.org