I have found that when I joke around too much and do/say a bunch of stupid (immature?) things some girls will tell me i'm weird. My reply has been always with a bright smile, "If everyone was normal this would be a boring world!".

My question was, how deterimental to attraction is being 'weird'? How does one avoid it when he has run out of ideas/ways to keep the conversation going and we are sitting with the girl in silence?