I don't think there are any real "straight-dudes-that-let-you-play-with-them," just bisexuals who only have a small percentage of homo in them. I mean, I would never do anything with a chick, whether I was drunk or not. So I wouldn't expect a straight guy to.
That said, I prefer ~straight-acting~ guys, simply because they're typically more masculine than your stereotype gay guy. Finding a masculine, gay bottom is quite a trick
I did have one experience with a "straight" guy. Me and his mates had been drinking, first time I'd gone out with him without our mutual friend. We all went back to his, and he "regrettably" told me that Jon and Becca were sharing the blow up bed, so I'd share with him. I certainly wasn't complaining =P He then started talking about sexuality, saying that he believed people could choose what sexuality they were, and he couldn't understand why I'd chosen men exclusively. I suggested he was bi, and he was genuinely shocked by this. We chatted some more, and he asked me about the time when our mutual mate (female) had felt me up under the table at the pub, and why I didn't get hard. I explained to him that ~being gay~ kinda meant that it only worked when gu
To my surprise, he then reached over, hands down my pants, and goes "what, like this?" He had the audacity to be affronted when I then tried to return the gesture, and I indignantly told him that it was going to work both ways. We only jerked each other off, and when I tried to kiss him, he moved his head. We shared his bed most weekends for a few months, but he never instigated anythingagain. It's a massive regret of mine that I didn't have the confidence to force the issue with him. =/