Three shaky legs and two pairs of foul lips

This, or something like this, was told in the car while we were heading to Ampang for a dinner with a couple of business partner. It was told in mandarin, and may sounds better in it's original form. Anyway without further ado... Ops.. one last thing, this is a 18SX post.

A man got up a bus. While walking toward the back of the moving bus, he knocked into a women.

Woman: What's the blardy wrong with you? You can't even walk steadily, even with three legs!
Man: I figure you have two pairs of lips my lady, and I reckon that both are equally foul!