This is an example of one of those dysfunctional threads that are problematic here.
Guy asks an innocent question, gets a first, excellent response from AlteredEgo, then gets smartass responses, putdowns, and comments from people not thinking outside the box or reading between the lines, or otherwise not on-topic, until MASSIVEPKGO_CHUCK redeems herself and then shaq724 gives a great response.
Maybe it's the ESL teacher in me, but I see language issues in his post (likely not the best in English skills), a general type of issue that underlies a lot of threads that end up going off-the-rails here, needlessly.
I think what he means is "how do I fuck my girlfriend really hard?," a natural question given that one can find hundreds to thousands of posts from women here (and comments elswhere, esp. online--many which might be coming from men pretending to be women) talking about how they like getting fucked (really) hard. And he's coming from an inexperienced male mindset (which I had when very young) that that's the way sex goes. Look at the language: nailed, drilled, screwed, banged, rammed, even pounded itself are used commonly as descriptors. What are the analagous "easy" "soft" fucking labels? They're not a big part of the discourse. It's no wonder.
Instead what I consider language pedants--or worse: people trying to show off how bright (read: superior) they are--jump all over the use of the word "pound" rather than giving some thought to (the spirit of) what he's getting at and addressing that. It's not insightful or a display of an expansive intellect to be overly literal and condemning based on the use of one given word. The intelligent thing to do is look beyond the surface and think about the theme of the comment, not merely literal text, and respond to that. That language issue is a major cause of discord in threads that get out of sorts. Obviously this was an innocent question from a guy who presented no other possible agenda, which isn't always the case, of course.
Is it so hard to give a straight answer to a straight question?
A couple of people put the issue in a light that taught him how his thinking might be skewed to help him. Good. But The crap responses are just obnoxious and counterproductive, leading, usually, to replies to themselves making for more wasted time and bandwidth. And potential conflicts between posters.
I'm sure some people will be pissed and that I forgot to commend someone for their helpful post. Whatever. The theme of this post is to use this as an example of recurring problems that produce less effective use of given discussions and the discussion boards in general, a topic that has been under discussion here.