¿Quieres por el chiquito?

Let's jump right into this one.

If you don't know what "el chiquito" is, let me say this another way:

¿Quieres por el culo?

I imagine many of you have caught on by now, but if you don't know much or any Spanish, culo means ass.  

¿Quieres por el culo?
Do you want it in the ass?

At this point it's clear we're talking about sexo anal - anal sex.

El chiquito is another of refering to the "ano".  Why it's called el chiquito is beyond me.  Here's a couple of examples of how to use the word chiquito:

Metemela por el chiquito
Put it in my ass

Me encanta que me den por mi chiquito
I love it when you give it me in my ass

I'm pretty sure you get the idea.  You can also substitute the word culo for chiquito in any of those sentences.  You can also refer to el chiquito as la puerta de atrás (the backdoor), the same way you do in English.

Now let's take a look at how to talk about the act itself.

Spanish has a verb for everything, and anal sex is no exception.  Coloquially you can refer to having anal sex as chiquitiando, from the verb chiquitiar.   If you want to be a little more formal, you can say tener sexo anal.  There's also the verb culear, which in general is another way of saying to have sex, but in some countries it can specifically mean to have anal sex. 

And although I translated el chiquito as ass, I think chiquito is not quite as harsh as ass, it's a euphemism.  Mind you it's not something you say in front of your grandmother.  In English we would say something like "let's do it in the butt", "going in the back door", or "riding the hershey highway".  We don't really have a way of referring to el chiquito in general.  At least not that I can think of at the moment.

Well, that's it for today.  Typically I like to tell people to run out and use any new words or phrases they learn right away and as much as possible to help it stick.  But I'm not so sure that's a good idea in this case,.

¡Hasta la próxima!