An imaginary point system awarded when a lesbian does something stereotypically lesbain.
Girl A: I just changed my oil and hammered something all while drinking a beer!
Girl B: Nice! If only you had also said "Nailed me some bitches!" You would have score bonus Bo Points.
-or-
Girl: Serena does not know how to drive a manual transmission! I am hereby stripping her of any and all accrued Bo Points.