Think ladies are the only ones putting on the fake “O”-face? Think again. Dr. Smartass explains.

Researchers have released the results from America’s biggest sex survey to date — and there are more than a few steamy surprises inside.

It’s true: Regular sex can actually make your organ grow, according to a new study. Just not necessarily in the way you might think.

Some women make the act of seduction far too difficult. Check out Dr. Smartass’s “10 Ways to Get Any Man to Mate In Minutes Seconds” and see just how simple it can be.

If you believe some recent research claiming most customers actually love AT&T, you’ll probably believe these equally absurd studies compiled by our own Dr. Smartass, too.

The way she walks can tell you a lot about the way she does certain other things. Dr. Smartass explains in this week’s reader Q&A.

Breaking up isn’t easy, but Dr. Smartass has some science-tested steps to make it sting a little less. (He told us they were science-tested, anyway — to be honest, we’re not fully convinced.)

If there’s one title worth listing on your resumé, “sexsomniac” might be it. Dr. Smartass looks into what’s arguably the oddest (and most unintentionally slutty) medical condition known to man.

Sometimes sex can go wrong. Horribly wrong. Dr. Smartass reveals the most common and curious sex injuries seen ’round the world.