Javierdude22: I dont wanna kill the thread or anything...but i'm not sure its a really valid question.
Look, we can all agree that we all know what we have under the hood and we know how to work it best. If you had a Volkswagen Golf for 10 years, you might expect a few mishaps when you ask him/her to do work on an Opel. Guys have an advatage to begin with, so its a bit of a biased question i think, a question maybe only bi's can answer.
Guys, in a technique kinda way, might be able to handle a dick best, but that theory doesnt work for a totally str8 guy, no way in hell a guy can give him good head, even if he tried (and no posts claiming that yóu would be an exception to that rule)
We all claim preference, and that makes up our answer i think, its almost math, as i mentioned bisexuals being a possible exception to that.