1) One of many deeds men all over the world strive to achieve. Usually identified by the size of balls required, risk or difficulty involved in their attainment.
2) Used disdainfully by the fairer sex to describe an ambition only a male would have.
1) He recently fulfilled his manbition of sleeping with two sisters at the same time.
Girl1: Hear about the guy who parachuted out of a hot air balloon at 3000 feet, then later landed on top of it?
Girl2: *sigh* There's a manbition.