[NSFW!] Guys, you are visited by a feminine extraterrestrial whose intention is to extract your DNA, do you let her take it the natural way, or a harder way?

Guys, imagine that it is 3am in the morning and you hear several loud bangs and realize it is your front door being knocked on. Before you can get there to open it, it is beat open and a sexy robot enters. She says she is a mechanized ambassador from planet so-and-so and she needs to collect DNA samples from 1,500 males. She tells you that you can do it the easy way, go back to your bed, undress and lie down so she can extract it the natural way, or you can disobey and she will do it the hard way, by holding you down and extract it by a long syringe like apparatus inserted into your testicles. Once you are sure that you are not high or drunk, which way would you have her take your DNA?