PGI
PGI is an acronym for Positive Girl Interaction. The higher the amount of PGI a guy has, the happier and more hopeful he becomes.

Maximizing your PGI is the ultimate goal for a guy when he is out on the town. Ones Positive Girl Interaction can be increased by talking to girls, dancing with girls, or taking a girl to poundtown, etc...
"My PGI skyrocketed once I got a hank senior from Julie last night"