the moment at which someone (or something) who has been consistently dependable suddenly collapses or disintegrates, due to age or any other factor
this phrase was popularized (and perhaps created) by Bill Simmons of ESPN as a candidate to replace jump the shark, it references the decline of the NBA's Gary Payton which became shockingly apparent in the 2004 NBA playoffs
Before marrying my girlfriend, my intuitions warned me that her libidoeventuallywill go GP on us.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi