out-there       
adjective (also out there) uk/ˈaʊtˌðeər/ us/ˈaʊtˌðer/
 非常极端的;十分怪异的
unusual or extreme
  He is a great agent because he isn't afraid to give the more out-there acts a try. 他是一个伟大的经纪人,因为他不怕尝试更多的极端手段。 
 Some of their ideas are totally out there.
 - More examples
 - This is one of the most out-there conspiracy theories I have heard.
 - She struck me as being a pretty out-there kind of person.
 - Playing around with genes is about as out there as anything I've ever heard of.
 - But do all these wacky, out-there flavour combinations really work?