HAVE ONE'S MOJO RISING (OR WORKING)
to have your charm or charisma working at full capacity; ain't no stoppin' ya now, especially with reference to scoring with a chick. You can't say or do anything wrong; your charismatic appeal is at peak level.
Talking to the foxy trollop at the end of the bar and trying to get to home plate was like placing a stick of butter in a microwave! She melted, and was up my ass like a proctologist on Monday morning!!! I guess I had my mojo rising that night!