A phrase used to indicate the fact that something or somebody reeks a little.
A bit stronger than pee you!!! but not ***NEARLY*** as strong as piss you!!!.
When you jump the gun and try to act the hero. Seeing an opportunity to get some praise without realising what's going on.
That guy thought he was saving the day because he has been going to the gym but turns out nobody needed saving. Sounds like he suffered premature mickulation