I have that problem with penises. For the first time, I did a glorious job in merging the intelligent conversation & my sexual obsession.
Last night I got excessively drunk with a group of people my partner & I are hoping to do some work for in the very near future. Got home, jumped onto/into bed with the lovely boyfriend, and rambled for about an hour about how cool it would be if humans had duck dicks and how evolution plays a part in genitalia design and what sorts of things would need to happen over a very very long time to get humans to have, what I consider, the coolest freaking penis ever.
Apparently this post is still on my mind.
After an hour of listening to me drunkenly, sleepily ramble about duck dicks, the boyfriend goes "Babe, if you want my penis inside you just say so. I really don't need a drunk evolution lesson right now."